The cooling loop filters and pumps are now back in the engine room after feedback. The canisters are still available to atmos techs but are slightly more secured.
Feedback based changes.

Engine waste is now fully self-contained and "loops" back.
Clears out the engine airlock.
Spreads the vent and scrubber in the engine room apart somewhat.
Merge remote-tracking branch 'upstream/dev' into Engine
Makes the engine room comply with the new atmospherics changes.
Merge remote-tracking branch 'upstream/dev' into Engine
Merge pull request #5888 from PsiOmegaDelta/Engine

Engine room facelift