Items That Make Players Into Antags

Created by: Shadowmech88

I've added a couple new items that can turn players into antags with some semblance of being IC, rather than literally being given the power by the gods, in the same vein as the Syndicate Uplink wish granter we currently have.

The changeling vial, which actually has nothing in common with actual vials except its appearance. When used, the user crushes it in their hand, and the contents attack them and inhabit their body. The vial is one-use only.

The stone mask, which turns a person into a vampire when they put it on and splash blood on it. It is one-use by default, but there is an infinite use version that can be spawned.

Neither item can be used by someone that is already that antag type. Both items can only be used by humans (this includes our various player races.)

New vampires created via the mask receive 300 blood to start with, and new changelings created via the vial receive 10 genomes. This is done because any player that uses these will most likely not have found them at round start, and so would be at a bit of a disadvantage otherwise due to getting such a late start.