[WIP] chore: add more eval cases COMPASS-9758

[mcasimir]

NOTE: need to check the content of each eval to make sure it matches what we have in the document

[Copilot]

Pull Request Overview

This PR adds comprehensive evaluation test cases for the Compass Assistant across multiple MongoDB-related topics. The changes expand test coverage by organizing eval cases into separate, focused modules and introducing new test scenarios for authentication, connection troubleshooting, query optimization, and data modeling guidance.

Key Changes:

• Reorganized existing eval cases into topic-specific modules with improved naming conventions
• Added new eval cases covering OIDC authentication, connection errors, explain plans, and data modeling scenarios
• Expanded Atlas Search test cases with additional query patterns and use cases

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packages/compass-assistant/test/eval-cases/index.ts	Updated imports and exports to use new module names and include additional test case collections
packages/compass-assistant/test/eval-cases/oidc-auth.ts	New file with OIDC authentication troubleshooting test cases
packages/compass-assistant/test/eval-cases/model-data.ts	Removed (content moved to data-modeling.ts)
packages/compass-assistant/test/eval-cases/explain-plan.ts	New file with query performance optimization test cases
packages/compass-assistant/test/eval-cases/data-modeling.ts	New file with MongoDB data modeling guidance test cases
packages/compass-assistant/test/eval-cases/connection-errors.ts	New file with connection troubleshooting test cases
packages/compass-assistant/test/eval-cases/atlas-search.ts	Expanded with additional Atlas Search functionality test cases
packages/compass-assistant/test/eval-cases/aggregation-pipeline.ts	Renamed variable and cleaned up formatting

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