Feature Request: Allow Specifying Trailer Sources for Download (or excluding sources i.e., searching on its own on YouTube)

[alexkahler]

I've noticed that when downloading trailers, Trailarr sometimes pulls in fan-made or unofficial trailers when it cannot find an official trailer via. TMDb. It often forces a download regardless of the trailer's authenticity or accuracy, which results in clutter and misleading content in my library.

It would be great to have the option to specify trusted sources for trailer downloads, such as verified channels or platforms like TMDb, or to be able to block searching for inaccurate trailers on YouTube. Ideally, if a trailer can't be found on one of these verified sources, Trailarr would gracefully skip the download rather than pulling content from potentially unreliable sources.

This feature would greatly enhance the user experience by ensuring only high-quality, official trailers are added to the library, keeping it accurate.