Upload select subtitles to OpenSubtitles

First, thanks for all the work on Bazarr, it saved me a lot of hours organizing my library and trying to find the correct subtitles for some shows.

There are some shows for which I cannot find the correct subtitles on the subtitle providers. This is particularly true for some obscure languages. However, some torrent releases pack with them subtitles in a lot of languages. For instance, I found Spanish SRT subtitles for a show in a torrent that weren't on any provider. So, I semi-manually included them in my library.

Thing is, I would love to be able to share these subtitles with the community, so that they don't have to go through the pain of downloading a torrent just for the subtitles. I'm more than happy to upload one or two files to OpenSubtitles, but when it's a show with 100+ episodes, that quickly becomes a chore - especially since it doesn't seem like you can batch upload subtitles to OpenSubtitles before reaching a certain amount of uploads.

Hence my idea: to be able to automatically upload subtitles to OpenSubtitles by adding an option in the contextual menu when hovering a subtitle language. It can just be one by one at first to comply with OpenSubtitles' API - also the interface makes it perfect before each show is already related to its IMDB ID, and through the release all of the required fields (release name, FPS, etc.) can be automatically filled.

I'm aware that what I'm offering here is definitely not a core feature - but I'm convinced this could help the overall community in the long run.