Removed some unused scripts.
Created Boom.Player as player-controlled actor
Created Boom.PlayerControls from PointerLockControls (but with physical properties, collision etc.)
Made the world able to have actors in it (need to figure out how these are placed), and added an world.update function
Defined some base constants.
Altered debugs helperarrow, now possible to scale as well as make it appear at origin.