New arrivals for Cerebron! (#29008)

* del cargo, remade basic arrivals in place

* gives life to foreport maints

* wires up foreport maints and new arrivals

* the great wiring of new arrivals

* Cargo halls + cargo spacewalks? FUCK YEAH!

* Cargo pipes and wires

* beepsky paths to arrivals, fixed access added lights

* undoes sec and dorms modifications, adds vault

* added paints to the halls and cargopads, also expanded foreport maints abit

* cargo hall is real now, also more pipes

* nudged library, updated the small decal map and added one near security checkpoint

* reorientates the posters + firelocks and alarms

* messes with new cafe

* added vacant office + minor changes

* cleans up some floorpaint

* fixes pipes, lights, and a table

* lattice and cable fixing

* adds vents and air alarms to newly added maints, medical maints is kinda out of scope

* forgot a pipe under an airlock

* replaces some maintainence airlocks with "external maintainence" airlocks

* adds forgotten cyan piping

* adds firelocks and lightbulbs

* adds firelock under QMs airlock

* Polarizes QM airlock

* makes pipes follow wire above smith

* more air alarms

* made buttons in QM office QM access only

* Gives QM an auth keycard swipper

* one more light switch

* I lied more light switches

* adds some decals and more love to maints

* fixed the sinks

* removes inner-departmental spacewalk, moves around rooms in aft cargo, remakes maints spacewalk with shutters, touches maints around areas modified

* adds a cable and nudges an APC to its cable

* removed old explorers office, moved Nanotrasen rep and blueshields office in its place

* undoes some changes I made at some pooint of time

* I forgot my CMO office PR went through

* rotates vents and pipes to prevent crossing

* suggested changes + rooming

* CI

* extra APC +  Fire alarm + vents

code/game/area/ss13_areas/public_areas.dm

@@ -153,6 +153,26 @@
 /area/station/hallway/secondary/bridge
 	name = "\improper Command Hallway"
 	icon_state = "hallC"
+
+// Hallways for departments
+
+/area/station/hallway/supply
+	name = "\improper Cargo Hallway"
+	icon_state = "cargo_hallway"
+
+/area/station/hallway/supply/fore
+	name = "\improper Fore Cargo Hallway"
+
+/area/station/hallway/supply/starboard
+	name = "\improper Starboard Cargo Hallway"
+
+/area/station/hallway/supply/aft
+	name = "\improper Aft Cargo Hallway"
+
+/area/station/hallway/supply/port
+	name = "\improper Port Cargo Hallway"
+
+
 // Other public areas