Implement spotify API

[omegabytes]

https://developer.spotify.com/web-api/

[Eldres]

https://www.reddit.com/r/DnD/comments/74f0y0/oc_dnd_spotify_dndify_rpg_ambient_music_app/

https://play.google.com/store/apps/details?id=gutrund.withbutton&hl=de <-- in German playstore, there is an English version

Spotify account: https://open.spotify.com/user/gutrund

[Eldres]

For more ambient music: https://open.spotify.com/user/bezoing