Adds slot machines to the game.

What it says on the tin.
It works with coins and shit.

emagging it is top lyl and shoots the coins at you.

Probabilities and values are currently completely arbitrary, feel free to suggest changes.

This does not place them on the map.
Actually I won't because the machine should still spin even if the person spinning it dies and outputting to null doesn't cause runtimes iirc.