Experimental OAuth login

Author: Zotify

Pipfile

@@ -8,7 +8,7 @@ librespot = {git = "git+https://github.com/kokarare1212/librespot-python"}
 music-tag = {git = "git+https://zotify.xyz/zotify/music-tag"}
 mutagen = "*"
 pillow = "*"
-pwinput = "*"
+pkce = "*"
 requests = "*"
 tqdm = "*"