Add Genre / Tag support

[arthurmelton]

It would be cool if it would tag the songs to add their genre. I know deezer atleast provides this with their api, but its annoying that its not in musicbrainz. https://wiki.musicbrainz.org/Genre (You supply it in the tag page.)

The main problem is I don't see any way of doing this during the initial creation so I think it has to be after the user has created the release.

[arthurmelton]

(Also did not know if I should comment on the road map or make a new issue, you can close this issue if you want it in the roadmap.)

[kellnerd]

Yes, it has to be a separate step, probably on the release actions page. Tags can be submitted via the MB API, but we need user authentication for that.

(Creating a new issue is the better way, the roadmap is mainly my personal dumping ground where I put my initial list of ideas because I was too lazy to create separate issues for all of them 😅)

[mjsir911]

this would be useful with #35 / #156 since the soundcloud api has this data

[UltimateRiff]

Bandcamp also has genre and tag data that can be submitted. there is a userscript by zabe40 for it currently, but it just copies the list into the Tag box on any MusicBrainz Release page

I will note that both SoundCloud and Bandcamp can have genres and tags on the track level as well as the release level, and it would be worth considering adding support for adding those tags too