Allow users to add genres in the editor

[aetheriscool]

There are hundreds of music genres in the world, and it'll be impossible to add them all into the game while trying to preserve balance. So, why not allow users to add the genres they wish to use? That way, if someone wants to create an artist for a really obscure genre, like Vegan Straight Edge (this is an actual genre in spotify lol) they can just add it in the editor instead of having to ask you to do it.