Add a roll system to picking powerups in multiplayer.

[Ketrai]

It's mostly just tiring to join random lobbies where it's often just first come first serve to the powerups, lest you get something that's completely useless with your weapon type, or last pick every time if you're being courteous. Just having a small roll happen when multiple people pick the same power, that randomly assigns said power once everyone's picked something... That'd be nice to avoid conflict.

Ergo
Player 1 - Picks 1 power
Player 2 & 3 picks the same power.
Dicerolls happens.
Player 3 gets the power.
Player 2 picks up the remaining power.