Adds Airlock System to BoxStation Supermatter Engine (#18013)

* Concepts

* Pipes and Lights

* THERE YOU ARE

* Bring it line

* Area

* Meteor Shielding

* In Which We Repipe the Engine Room

* Re-areas about half of engi

Separates the engine room, and re-areas the "main" engi hallway between airlock
and the CE Office/Equipment to be a hardsuitstorage

* Now with 100% more of Sean's Flaps

* Missed a spot

* Atmos Doors

* Don't Map When Tired

* Power

* This is not a cry for help

Sean made me do this.

code/game/area/ss13_areas.dm

@@ -1070,7 +1070,6 @@ NOTE: there are two lists of areas in the end of this file: centcom and station
 /area/engine/engine_smes
 	name = "\improper Engineering SMES"
 	icon_state = "engine_smes"
-	requires_power = FALSE //This area only covers the batteries and they deal with their own power
 	dynamic_lighting = DYNAMIC_LIGHTING_FORCED
 
 /area/engine/engineering