New Buttons (#5)

Added two new buttons to the player:
 - Favorite song button
 - Queue mode button

Reviewed-on: #5

SubSonic.py

@@ -306,7 +306,7 @@ class SubpyConn:
         return starred
 
     # Returns a requests Response object, the data stream can be found in Response.content
-    def stream(self, song_id: str, maxBitRate: int | None = None) -> requests.Response:
+    def stream(self, song_id: str, maxBitRate: int | None = None, format: str | None = None) -> requests.Response:
         url = self.base_url + '/rest/stream?'
 
         payload = self._getBasePayload()
@@ -314,6 +314,9 @@ class SubpyConn:
         if maxBitRate:
             payload['maxBitRate'] = maxBitRate
 
+        if format:
+            payload['format'] = format
+
         payload['id'] = song_id
 
         return requests.get(url + self._encodePayload(payload), stream=True)