- Implemented Create, Read, Update (PUT/PATCH), and Delete (CRUD) operations for films.
- Added SQL queries for film management (e.g., NextFilmID, InsertFilm, UpdateFilmPut, PatchFilm, and DeleteFilm).
- Updated HTTP handlers to support enhanced film operations, including validation and null handling.
- Refactored category handling logic for cleaner syntax.
- Included HTTP client test samples for film API in `films_crud_test.http`.