add missing auth grant to forward participant (#425)

Author: zachkamran

livekit-api/livekit/api/access_token.py

@@ -39,6 +39,9 @@ class VideoGrants:
     room_join: Optional[bool] = None
     room: str = ""
 
+    # allows forwarding participant to room
+    destination_room: Optional[str] = None
+
     # permissions within a room
     can_publish: bool = True
     can_subscribe: bool = True

livekit-api/livekit/api/room_service.py

@@ -215,7 +215,7 @@ async def forward_participant(self, forward: ForwardParticipantRequest) -> None:
             SVC,
             "ForwardParticipant",
             forward,
-            self._auth_header(VideoGrants(room_admin=True, room=forward.room)),
+            self._auth_header(VideoGrants(room_admin=True, room=forward.room, destination_room=forward.destination_room)),
             ForwardParticipantResponse,
         )