Improve generation time

[Alan Zimmer (alzimmermsft)]

Update code generation to improve generation time with the following changes:

• Update Google Java Format and Eclipse JDT dependencies to latest versions supporting our Java 17 baseline.
• Reuse JavaParser parsed files between code customizations, partial update, and import sorting to reduce repetitive work.
• Use in-code compilation to ready code customizations rather than a call to mvn compiler:compile.
• Add parallelization to code formatting.
• Added formatting fences to JSON schemas in Javadoc to prevent parsing errors in Eclipse formatting.
• Added guard in fluentnamer to only dump YAML when debugging as it isn't a cheap task.

[github-actions]

All changed packages have been documented.

• ✅ @typespec/http-client-java

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@typespec/http-client-java - fix ✏️

Improve Java generation performance by compiling customizations in memory, sharing parsed Java files across customization, partial update, and import ordering, tokenizing import headers for untouched files, using bounded parallel formatting, preserving schema Javadocs without parsing their contents as Java, and writing ARM debug code models only when debugging is enabled. Customizations continue to run before partial update. Formatter parallelism can be limited when generating multiple clients concurrently.

@typespec/http-client-java - dependencies ✏️

Update Eclipse JDT Core to 3.47.0, ECJ to 3.46.100, and the Eclipse platform dependencies to their latest Java 17-compatible releases.

[azure-sdk-automation]

You can try these changes here

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