Minor bugfixes on Pillar (#12412)
Minor bugfixes on Pillar (#12412)

* Add fix-vacuum-markers to atmos miner chambers

* Add gas miners to atmos chambers

* Fix pump pressures and o2/n2 ratio

Makes O2 and N2 pumps output at a normal, human pressure.
Fixes distro mixer to use normal, human air mix

* Add a missing LV cable outside mime room

* Lock botany maintenence doors

Co-authored-by: Eoin Mcloughlin <6adfb183a4a2c94a2f92dab5ade762a47889a5a1@eoinrul.es>
space-wizards/space-station-14,space-wizards/space-station-14,space-wizards/space-station-14,space-wizards/space-station-14,space-wizards/space-station-14,space-wizards/space-station-14