feat: added official value in endpoint params and responses

[cka-y]

Summary:
This PR introduces the capability to filter feeds by their official status within the API. The implementation includes updates to existing methods, modifications to test data, and new test cases to ensure proper functionality.

Enhancements to Feeds Filtering:

• feeds_api_impl.py:
  • Added a new helper method _get_latest_official_status_subquery to facilitate filtering based on the latest official status.
  • Updated methods to include is_official as a filter parameter.

Updates to Models and Filters:

• basic_feed_impl.py:
  • Modified the from_orm method to include the latest official status.
  • Added joinedload for officialstatushistories to optimize queries. [1] [2]
• search_api_impl.py:
  • Enhanced search queries to include is_official as a filter.
  • Improved functionality across multiple filter-related methods. [1] [2] [3] [4]

---

Testing Instructions:

1. Create a tunnel to the development database.
2. Run the API locally.
3. Validate the filtering functionality by making requests to endpoints like:

   http://127.0.0.1:8080/v1/gtfs_feeds?official=true
   

   Ensure that the behavior matches expectations.

Please make sure these boxes are checked before submitting your pull request - thanks!

• Run the unit tests with ./scripts/api-tests.sh to make sure you didn't break anything
• Add or update any needed documentation to the repo
• Format the title like "feat: [new feature short description]". Title must follow the Conventional Commit Specification(https://www.conventionalcommits.org/en/v1.0.0/).
• Linked all relevant issues
• Include screenshot(s) showing how this pull request works and fixes the issue(s)

[github-actions]

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[qcdyx]

LGTM - I tested the code locally and got 200 response.