Implement "patch_channel" in User class (#212)

Implement "patch_channel" in User class

Author: kai-py

twitchio/user.py

@@ -693,7 +693,32 @@ async def create_prediction(
         )
         return Prediction(self._http, data[0])
 
+    async def modify_stream(
+        self, token: str, game_id: int = None, language: str = None, title: str = None
+    ):
+        """|coro|
+        Modify stream information
+
+        Parameters
+        -----------
+        token: :class:`str`
+            An oauth token with the channel:manage:broadcast scope
+        game_id: :class:`int`
+            Optional game ID being played on the channel. Use 0 to unset the game.
+        language: :class:`str`
+            Optional language of the channel. A language value must be either the ISO 639-1 two-letter code for a supported stream language or “other”.
+        title: :class:`str`
+            Optional title of the stream.
+        """
+        await self._http.patch_channel(
+            token,
+            broadcaster_id=str(self.id),
+            game_id=str(game_id),
+            language=language,
+            title=title,
+        )
 
+        
 class BitLeaderboardUser(PartialUser):
 
     __slots__ = "rank", "score"