Add Jellyfin naming logic for Fanart
What TMM version are you using?
Version 5 NIGHTLY
What is the actual behavior?
I'm usinng Jellyfin as a media centre. Jellyfin prefers some file names over others when scraping artwork. E.g. when downlading posters, it saves the file primarily as folder.jpg, that's why I selected that option in TMM for poster to avoid duplicate artwork.
Fanart/backdrops on the other hand receive the name 'backdrop.jpg' with 'backdrop1.jpg' 'backdrop2.jpg' for additional files. This lead to duplicate artwork, as JF recognized the TMM fanart files, and scraped the same image by itself as backdrop. Also, backdrop files arte not recognized by TMM as in the fanart preview.
What is the expected behavior?
Add a new naming option for fanart for better JF compatibility. Use 'backdrop.jpg' for the first main artwork with 'backdrop%N.jpg' for additional fanart. (Maybe use "Backdrop" instead of "Fanart" for the main UI, as backdrop is less specific.)