use arrow keys/return

I asked for help and Chandler moved some stuff around and introduced a new version of the terminal bar with an onHold method that uses callbacks from the main script for lifting and placing and presumably I’ll be able to add the item action as a callback function too. Things are kind of organized out into their own classes now in a way that’s a little more object oriented than before. Now items can be moved to inventory, but I still have to wrap my head around a few things before I can get them moving back to the room.