Progress bars + Wall Rationalization

This commit does the following:
 - Ports progress bars from -tg- (tgstation/-tg-station#9921)
 - Refactors wall attackby code to make it 100% less insane; Instead of
   manually checking every little thing, it uses do_after,
   consequentially, making the new progress bars affect dealing with walls
   as well.

Wall code makes a tiger sad.

code/game/objects/items/mountable_frames/lights.dm

@@ -11,7 +11,7 @@
 	playsound(get_turf(src), 'sound/machines/click.ogg', 75, 1)
 	var/constrdir = user.dir
 	var/constrloc = get_turf(user)
-	if (!do_after(user, 30))
+	if (!do_after(user, 30, target = src))
 		return
 	var/obj/machinery/light_construct/newlight
 	switch(fixture_type)