Room selection scene for browser variant
For the standalone variant, we need a scene to select the room. It needs to look much like the login scene, but instead:
- Have three tabs (or something similar):
- Joined rooms: A drop-down list with rooms the user has already joined
- Public rooms: A drop-down list with available public rooms
- New room: An input field for a name for a new room
Dummy entries can be used for the drop-downs for now.