update_appearance (#55468)

Creates update_name and update_desc
Creates the wrapper proc update_appearance to batch update_name, update_desc, and update_icon together
Less non-icon handling code in update_icon and friends
Signal hooks for things that want to change names and descriptions
99%+ of the changes in this are just from switching everything over to update_appearance from update_icon

code/game/objects/structures/transit_tubes/station.dm

@@ -37,7 +37,7 @@
 		for(var/obj/structure/transit_tube_pod/pod in loc)
 			if(!pod.moving)
 				AM.forceMove(pod)
-				pod.update_icon()
+				pod.update_appearance()
 				return
 
 
@@ -259,7 +259,7 @@
 	playsound(src, 'sound/weapons/emitter2.ogg', 50, TRUE)
 	pod.setDir(turn(src.dir, -90))
 	AM.forceMove(pod)
-	pod.update_icon()
+	pod.update_appearance()
 	launch_pod()
 
 /obj/structure/transit_tube/station/dispenser/pod_stopped(obj/structure/transit_tube_pod/pod, from_dir)

code/game/objects/structures/transit_tubes/transit_tube_pod.dm

@@ -31,10 +31,8 @@
 	return ..()
 
 /obj/structure/transit_tube_pod/update_icon_state()
-	if(contents.len)
-		icon_state = occupied_icon_state
-	else
-		icon_state = initial(icon_state)
+	icon_state = contents.len ? occupied_icon_state : initial(icon_state)
+	return ..()
 
 /obj/structure/transit_tube_pod/attackby(obj/item/I, mob/user, params)
 	if(I.tool_behaviour == TOOL_CROWBAR)
@@ -98,7 +96,7 @@
 		location = get_turf(src)
 	for(var/atom/movable/M in contents)
 		M.forceMove(location)
-	update_icon()
+	update_appearance()
 
 /obj/structure/transit_tube_pod/Process_Spacemove()
 	if(moving) //No drifting while moving in the tubes
@@ -199,7 +197,7 @@
 		if(direction == turn(station.boarding_dir,180))
 			if(station.open_status == STATION_TUBE_OPEN)
 				user.forceMove(loc)
-				update_icon()
+				update_appearance()
 			else
 				station.open_animation()
 		else if(direction in station.tube_dirs)