[MERGED PR] Makes Permeability coefficient into an object property.

[Mouse]

wizards is kind of its own rabbit hole right now, its a whole jumble of balance
could probably just have sarin pen regardless unless youre on a very high chemprot (100%? 80%?) so assuming biosuits would fill that role, a speed down on said suits would help as well

Best PR has been merged but I do think the idea of sarin having a flag so that protection is either all-or-none would be a good idea, and the flag is something that could be used with future chems as well.