Introduce a new endpoint to delete event themes, supporting both soft and hard deletes. Hard deletes are restricted to superusers, while soft deletes deactivate the theme. Also, improve error handling and user permission checks for this operation.
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.
Renamed `event_theme` and `test_user_schema` file paths and imports to follow consistent plural naming conventions. This improves code clarity and aligns file and import naming across the project.
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.
