feat(vercel): add gen.ai.input.messages + gen.ai.output.messages

[nina-kollman]

[!IMPORTANT] Add standardized GenAI input/output message attributes and update tests and dependencies for improved AI SDK functionality.

• Features:
  • Add standardized GenAI input/output message attributes in ai-sdk-transformations.ts.
  • Normalize prompts, roles, text parts, and tool-call outputs across SDKs.
• Tests:
  • Add tests for GenAI input/output message generation in instrumentation.test.ts.
  • Remove older AI SDK integration test suite.
• Dependencies:
  • Bump @opentelemetry/semantic-conventions to ^1.37.0 in multiple package.json files.
• Misc:
  • Note duplicate test block insertion in instrumentation.test.ts.

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Summary by CodeRabbit

• New Features

  • Introduced standardized GenAI input/output message attributes and normalized roles, text parts, and tool-call outputs across SDKs and instrumentations.

• Tests

  • Added tests and HAR recordings validating GenAI input/output message generation for chat completions.
  • Removed older unit and end-to-end AI SDK test suites and associated integration recordings.

• Chores

  • Bumped @opentelemetry/semantic-conventions to ^1.37.0 across packages and added it to AI semantic conventions.