Test only - hugging face

[derrickaw]

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Summary of Changes

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This pull request introduces support for HuggingFace pipelines within the Apache Beam YAML SDK. It adds the necessary provider logic to handle model inference and includes a new integration test to verify the functionality. Additionally, the build system has been updated to manage ML-specific dependencies more effectively during the testing process.

Highlights

• HuggingFace Integration: Added a new HuggingFacePipelineProvider to the YAML ML module, enabling seamless integration of HuggingFace models within Apache Beam YAML pipelines.
• Test Infrastructure: Introduced a new YAML integration test for HuggingFace pipelines and updated the build configuration to include necessary dependencies for ML-based testing.
• Build System Updates: Refactored YAML integration test dependencies to use a dedicated task, ensuring consistent environment setup across pre-commit and post-commit test suites.

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Code Review

This pull request introduces support for Hugging Face pipelines in Apache Beam YAML by adding the HuggingFacePipelineProvider model handler, along with integration tests and a Gradle task to install the required dependencies. The review feedback highlights three important issues: a Gradle build error caused by escaping the buildDir variable (preventing its interpolation), a potential TypeError and incorrect return structure in the Hugging Face test pipeline's real_inference function, and a potential AttributeError in the validate method of HuggingFacePipelineProvider if the configuration is empty.