Fixes#30483
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## Summary by CodeRabbit
* **New Features**
* Added a new webhook endpoint to track GitHub Projects v2 item status
changes and record engineering metrics.
* Integrated with Google BigQuery for storing and analyzing issue status
transition data.
* **Chores**
* Introduced a new POST API route for receiving GitHub Projects v2 item
events.
* Added configuration options for GitHub webhook secrets and Google
Cloud service account keys (commented out for future use).
* Added a new dependency for Google BigQuery integration.
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Co-authored-by: Eric <[email protected]>
