Big game overhaul

Pretty big update today!

• I made a main menu and now you can choose between singleplayer and multiplayer
• Added an options menu and an option to change between basic and advanced camera modes (which changes your pov with the robot
• Added a system to select between the different year’s games
• Added browser and Linux builds
• Fixed a clipping problem with the 3rd-person camera
  And I began work on online multiplayer.