Adding Funkwhale Support

[ooosssay]

Hi, I would appreciate it if Amperfy would support Funkwhale natively as using Funkwhale with Subsonics API is not good due to only supporting a few API endpoints but of course, that would require a lot of effort on your part. If possible I would like it if at minimum, the most common features would be added for example the Playlist add and remove feature. https://docs.funkwhale.audio/swagger/