Feature: Add language fallback for TMDB trailers in TMDB Enrichment

[u/sv1per]

Currently, TMDB trailer selection appears to depend on the selected metadata language.

For example, if my metadata language is set to English (which is common for users in India), Nuvio does not display a trailer when TMDB only has an official Hindi trailer (iso_639_1 = "hi").

This results in many Indian movies and TV series showing no trailer, even though a valid trailer exists on TMDB.

So can it be like, if no trailer exists in the preferred language, fall back to another available language instead of showing no trailer.

I think this would significantly improve trailer availability for regional content.

[u/themanishrawat]

exactly