Add atmos.speedup which is effectively a atmos-only time compression
CVar. This adjusts heat capacities and transfer rates to effectively
globally speed up the time constants of atmos.
This allows faster response to heating/cooling changes and faster
cleanups (by buffing scrubbers, pumps, and everything else) that is
tunable through one global time compression CVar.
It also achieves this without any thermodynamic unsoundness.
* stuff i'll have to fix anyway when n2o gets merged
* everything except the finished reactions
* freon coolant reaction but with bad curve
* miasmic subsumation
* freon production
* nitrogen and diff temp scaling
* uhh meant to change that
* #
* hitting that frezon boof
