Borg thermodynamics rework

[Glamurio]

Big fan of these changes, perfect addition to existing mechanics that both make sense on a logical point of view and are excused by the rule of cool where they don't make so much sense. I don't see any particular issues, you seem to consider all necessary issues (such as clamping to prevent insta-death).

My only concern is for people to start messing around with plasmafires just in order to become GLOWBORGS, and thus jeopardizing the station in some capacity, but that's a separate issue.