Update database with new data

[nicford]

We can pull new movie data from tmdb using a cronjob (https://docs.nestjs.com/techniques/task-scheduling) and add it to the database. We can also get any changes to existing data from the tmdb api.

NOTE: if we do the latter, we should clear the cache afterwards, so that no stale values remain if somethings changes.

[SteveLim99]

Database schema and data updated