Create player prefabs

[codecreativity]

• [x] Create prefab for PlayerVR (containing camera etc.) that is used for every room
• [ ] Create prefab for PlayerPC (containing camera, controls, etc.) that is used for every room
• [ ] Add height check for player prefabs

Clip through floor possible:

Used to happen when teleporting to certain spots in old lab, could not reproduce consistently. A Solution would be to detect if player falls under -100 on Y-axis and reset the room if detected.