Refactored the event API routes to improve error handling, add logging, and provide enhanced response structures with pagination. Updated tests to use new fixtures and include additional authentication utilities to facilitate testing with FastAPI's dependency injection. Also resolved issues with timezone awareness in event schemas.
Introduced routes for event management, including CRUD operations and querying by user or public visibility. Updated event themes routes with operation IDs for better documentation. Refactored `api/main.py` to `api/router.py` and integrated events routing into the API.
Implemented API endpoints for creating, reading, updating, and listing event themes. Integrated the new routes into the FastAPI application router under the '/event_themes' prefix.
