chore: add issue and PR template

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: Bug Report
+description: Released feature does not work as expected in the SAP Cloud SDK for AI (Python).
+title: '<title>'
+labels: 
+  - bug
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please note that this repository is for Python and SDK related issues only.
+        Issue for SAP Cloud SDK for AI (JS/TS), please open [here](https://github.com/SAP/ai-sdk-js/issues/new/choose).
+        Issue for SAP Cloud SDK for AI (Java), please open [here](https://github.com/SAP/ai-sdk-java/issues/new/choose).
+        Issue for SAP AI Core services (Orchestration, Grounding, Prompt Registry, ...), please refer to the [SAP AI Core Support Process](https://help.sap.com/docs/sap-ai-core/sap-ai-core-service-guide/support-process).
+  - type: checkboxes
+    attributes:
+      label: "Checklist"
+      description: "Before submitting your issue, please make sure to check the following:"
+      options:
+        - label: "My issue is not an [AI Core service issue](https://help.sap.com/docs/sap-ai-core/sap-ai-core-service-guide/support-process), but an SDK issue."
+          required: true
+        - label: "My issue is a Python related issue, not a [JS/TS](https://github.com/SAP/ai-sdk-js/issues) or [Java](https://github.com/SAP/ai-sdk-java/issues) related issue."
+          required: true
+        - label: "My issue is not [already reported or documented](https://github.com/SAP/ai-sdk-python/issues)."
+          required: true
+  - type: textarea
+    attributes:
+      label: "Describe the Bug"
+      description: "A clear and concise description of what the bug is."
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: "Steps to Reproduce"
+      description: "Steps to reproduce the behavior."
+      placeholder: |
+        1. Set up ...
+        2. Execute ...
+        3. Confirm ...
+        4. See error
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: "Expected Behavior"
+      description: "A clear and concise description of what you expected to happen."
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: "Screenshots"
+      description: "Add screenshots to help explain your problem."
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: "Used Versions"
+      description: "Provide versions used in the project."
+      value: |
+        - Python version via `python3 --version`: ...
+        - SAP Cloud SDK for AI package version:
+          - ...
+          - ...
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: "Code Examples"
+      description: "Add code snippets as examples to help explain your problem. Please remove sensitive information."
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: "Log File"
+      description: "Add your log file or related error message. Again, please remove sensitive information."
+    validations:
+      required: false
+  - type: dropdown
+    attributes:
+      label: "Region"
+      description: "Choose the region of your AI Core service."
+      multiple: true
+      options:
+        - AP10
+        - EU10 Canary
+        - EU10
+        - EU11
+        - EU12 Canary
+        - EU20
+        - EU30
+        - JP10
+        - US10
+        - US21
+        - US30
+        - SA30
+        - Not listed above
+    validations:
+      required: true
+  - type: dropdown
+    attributes:
+      label: "Affected Development Phase"
+      description: "Choose the development phase affected by this issue."
+      multiple: false
+      options:
+        - Getting Started
+        - Development
+        - Release
+        - Production
+    validations:
+      required: true
+  - type: dropdown
+    attributes:
+      label: "Impact"
+      description: "Choose the impact severity."
+      multiple: false
+      options:
+        - No Impact
+        - Inconvenience
+        - Impaired
+        - Blocked
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: "Timeline"
+      description: "Please briefly state your timeline, e.g., Go-Live in 12 weeks."
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: "Additional Context"
+      description: "Add any other context about the problem here."
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: SAP Cloud SDK for AI (JS/TS) Issues
+    url: https://github.com/SAP/ai-sdk-js/issues/new/choose
+    about: Please report issues concerning the SAP Cloud SDK for AI (JS/TS) here.
+  - name: SAP Cloud SDK for AI (Java) Issues
+    url: https://github.com/SAP/ai-sdk-java/issues/new/choose
+    about: Please report issues concerning the SAP Cloud SDK for AI (Java) here.
+  - name: SAP AI Core Service Issues
+    url: https://help.sap.com/docs/sap-ai-core/sap-ai-core-service-guide/support-process
+    about: Please refer to the SAP AI Core Support Process for issues concerning SAP AI Core services (Orchestration, Grounding, Prompt Registry, ...).

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: Feature Request
+description: Request a new feature to help your project using the SAP Cloud SDK for AI (Python).
+title: '<title>'
+labels: 
+  - feature request
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please note that this repository is for Python and SDK related issues only.
+        Issue for SAP Cloud SDK for AI (JS/TS), please open [here](https://github.com/SAP/ai-sdk-js/issues/new/choose).
+        Issue for SAP Cloud SDK for AI (Java), please open [here](https://github.com/SAP/ai-sdk-java/issues/new/choose).
+        Issue for SAP AI Core services (Orchestration, Grounding, Prompt Registry, ...), please refer to the [SAP AI Core Support Process](https://help.sap.com/docs/sap-ai-core/sap-ai-core-service-guide/support-process).
+  - type: checkboxes
+    attributes:
+      label: "Checklist"
+      description: "Before submitting your issue, please make sure to check the following:"
+      options:
+        - label: "My issue is not an [AI Core service issue](https://help.sap.com/docs/sap-ai-core/sap-ai-core-service-guide/support-process), but an SDK issue."
+          required: true
+        - label: "My issue is a Python related issue, not a [JS/TS](https://github.com/SAP/ai-sdk-js/issues) or [Java](https://github.com/SAP/ai-sdk-java/issues) related issue."
+          required: true
+        - label: "My issue is not [already reported or documented](https://github.com/SAP/ai-sdk-python/issues)."
+          required: true
+  - type: textarea
+    attributes:
+      label: "Describe the Problem"
+      description: A clear and concise description of what the problem is, e.g., I'm always frustrated when [...]
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: "Propose a Solution"
+      description: A clear and concise description of what you want to happen.
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: "Describe Alternatives"
+      description: A clear and concise description of any alternative solutions or features you've considered.
+    validations:
+      required: false
+  - type: dropdown
+    attributes:
+      label: "Affected Development Phase"
+      description: "Choose the development phase affected by this issue."
+      multiple: false
+      options:
+        - Getting Started
+        - Development
+        - Release
+        - Production
+    validations:
+      required: true
+  - type: dropdown
+    attributes:
+      label: "Impact"
+      description: "Choose the impact severity."
+      multiple: false
+      options:
+        - No Impact
+        - Inconvenience
+        - Impaired
+        - Blocked
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: "Timeline"
+      description: "Please briefly state your timeline, e.g., Go-Live in 12 weeks."
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: "Additional Context"
+      description: "Add any other context about the feature request here."
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/question.yml

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+name: Question
+description: Ask a question about the SAP Cloud SDK for AI (Python).
+title: '<title>'
+labels: 
+  - question
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Please note that this repository is for Python and SDK related issues only.
+        Issue for SAP Cloud SDK for AI (JS/TS), please open [here](https://github.com/SAP/ai-sdk-js/issues/new/choose).
+        Issue for SAP Cloud SDK for AI (Java), please open [here](https://github.com/SAP/ai-sdk-java/issues/new/choose).
+        Issue for SAP AI Core services (Orchestration, Grounding, Prompt Registry, ...), please refer to the [SAP AI Core Support Process](https://help.sap.com/docs/sap-ai-core/sap-ai-core-service-guide/support-process).
+  - type: checkboxes
+    attributes:
+      label: "Checklist"
+      description: "Before submitting your issue, please make sure to check the following:"
+      options:
+        - label: "My issue is not an [AI Core service issue](https://help.sap.com/docs/sap-ai-core/sap-ai-core-service-guide/support-process), but an SDK issue."
+          required: true
+        - label: "My issue is a Python related issue, not a [JS/TS](https://github.com/SAP/ai-sdk-js/issues) or [Java](https://github.com/SAP/ai-sdk-java/issues) related issue."
+          required: true
+        - label: "My issue is not [already reported or documented](https://github.com/SAP/ai-sdk-js/issues)."
+          required: true
+  - type: textarea
+    attributes:
+      label: "Describe the Question"
+      description: A clear and concise description of your question.
+    validations:
+      required: true

.github/PULL_REQUEST_TEMPLATE.md

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+## Context
+
+Closes SAP/ai-sdk-python-backlog#ISSUENUMBER.
+
+## What this PR does and why it is needed
+
+<!-- Please provide a description summarizing your changes and their rationale -->
+
+<!-- Before raising this PR, please review the Definition of Done below and confirm that all applicable items are completed. 
+## Definition of Done
+
+- [ ] Code is tested (Unit, Integration, E2E)
+- [ ] Error handling created / updated & covered by the tests above
+- [ ] Documentation updated
+  - Only Public APIs are allowed to be used in documentation/tutorials/sample code 
+- [ ] (Optional) Aligned changes with the JS/TS and Java SDK
+- [ ] (Optional) Release notes updated -->