Arcade map

Adds an arcade to both Cyberiad and Metastation

Adds a bottler unit to Cyberiad bar office

Adds a bottler unit to Metastation abandoned bar

Adjusts the showers to actually start on the walls and gives them better
mist handling logic
- Fixes #8107

🆑
rscadd: MANDATORY FUN! Arcades added to both stations!
rscadd: Bottler units have been spotted on board both stations!
tweak: Cyberiad bathrooms should have 100% fewer floating showers
(behind curtains).
bugfix: Showers have been fitted with mist-reducing showerheads. They
should no longer generate infinite mist if rapidly toggled.
/🆑

code/game/objects/structures/watercloset.dm

@@ -252,8 +252,8 @@
 
 /obj/machinery/shower/New(turf/T, newdir = SOUTH, building = FALSE)
 	..()
-	dir = newdir
 	if(building)
+		dir = newdir
 		pixel_x = 0
 		pixel_y = 0
 		switch(newdir)
@@ -349,6 +349,8 @@
 				qdel(mymist)
 			ismist = 0
 			return
+		if(mymist)
+			return
 		ismist = 1
 		mymist = new /obj/effect/mist(loc)
 	else