Add better commands to make the game easier to demo

[WasabiFan]

• Command to move into the Wumpus room
• Command to disable the particle system to improve perf on low-speed machines
• Command to disable losing (infinite or large number of arrows, reset on game loss, etc)

Also, we should probably refactor the commands into their own folder and put each into their own file. Also, we should optimize them to be easy and quick to type: "display" could be show, for example.

[kyranstar]

bb5b584 Added command to move into the Wumpus room "mv wumpus"