Adds directionals for the AAC. (#3937)

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## About The Pull Request

![obraz](https://github.com/user-attachments/assets/52fbdd20-dad9-4b75-953e-3da275d66cc8)

Also adds directional helpers.
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## Why It's Good For The Game
It's sorta annoying in mapping that you *cannot* rotate those. This
should help.
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## Changelog

:cl:
imageadd: Advanced airlock controllers now have directional sprites.
/:cl:

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code/game/machinery/airlock_cycle_control.dm

@@ -103,6 +103,9 @@
 	var/list/airlocks = list()
 	var/list/vents = list()
 	var/obj/vis_target = null
+	dir = 1 // So none of the current maps break (dir helpers [below] require sprite dirs to be swapped; 1 is down-facing, so what it was before).
+
+MAPPING_DIRECTIONAL_HELPERS(/obj/machinery/advanced_airlock_controller, 24)
 
 /obj/machinery/advanced_airlock_controller/lavaland
 	exterior_pressure = WARNING_LOW_PRESSURE + 10
@@ -116,6 +119,8 @@
 	exterior_pressure = ONE_ATMOSPHERE
 	depressurization_margin = ONE_ATMOSPHERE
 
+MAPPING_DIRECTIONAL_HELPERS(/obj/machinery/advanced_airlock_controller/internal, 24)
+
 /obj/machinery/advanced_airlock_controller/New(loc, ndir, nbuild)
 	..()
 	wires = new /datum/wires/advanced_airlock_controller(src)