Interactive disambiguation

[mx-psi]

Sometimes the Letterboxd importer has trouble knowing which film the user is trying to import among different films with the same name. Since Letterbox uses IMDB data internally, we could use IMDB data to disambiguate which film the user has rated.

A possible approach would be to:

1. Generate an index of films using an IMDB dataset, either at runtime or pregenerated and stored here.
2. Create an UI to help the user decide which film they are referring to among the ones with the same name.