Joins a room with the selected roomToken and roomPassword .
Parameters
roomToken
Unique identifier of the room you want to join. This is obtained from the RoomOperationResult obtained after doing a CreateRoom() operation.
roomPassword
Optional password for rooms that require one when joining. This is obtained from the RoomOperationResult obtained after doing a CreateRoom() operation.
Returns
A task you should await for and receive a result with the information on the newly joined room.