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/ATMOSPHERICS/components/binary_devices/dp_vent_pump.dm

@@ -266,7 +266,7 @@
 		var/obj/item/weapon/weldingtool/WT = W
 		if (WT.remove_fuel(0,user))
 			user << "<span class='notice'>Now welding the vent.</span>"
-			if(do_after(user, 20))
+			if(do_after(user, 20, target = src))
 				if(!src || !WT.isOn()) return
 				playsound(get_turf(src), 'sound/items/Welder2.ogg', 50, 1)
 				if(!welded)
@@ -302,7 +302,7 @@
 		return 1
 	playsound(get_turf(src), 'sound/items/Ratchet.ogg', 50, 1)
 	user << "<span class='notice'>You begin to unfasten \the [src]...</span>"
-	if (do_after(user, 40))
+	if (do_after(user, 40, target = src))
 		user.visible_message( \
 			"[user] unfastens \the [src].", \
 			"<span class='notice'>You have unfastened \the [src].</span>", \

code/ATMOSPHERICS/components/binary_devices/passive_gate.dm

@@ -166,7 +166,7 @@
 		return 1
 	playsound(src.loc, 'sound/items/Ratchet.ogg', 50, 1)
 	user << "<span class='notice'>You begin to unfasten \the [src]...</span>"
-	if (do_after(user, 40))
+	if (do_after(user, 40, target = src))
 		user.visible_message( \
 			"[user] unfastens \the [src].", \
 			"<span class='notice'>You have unfastened \the [src].</span>", \

code/ATMOSPHERICS/components/binary_devices/pump.dm

@@ -198,7 +198,7 @@ Thus, the two variables affect pump operation are set in New():
 		return 1
 	playsound(src.loc, 'sound/items/Ratchet.ogg', 50, 1)
 	user << "<span class='notice'>You begin to unfasten \the [src]...</span>"
-	if (do_after(user, 40))
+	if (do_after(user, 40, target = src))
 		user.visible_message( \
 			"[user] unfastens \the [src].", \
 			"<span class='notice'>You have unfastened \the [src].</span>", \

code/ATMOSPHERICS/components/binary_devices/volume_pump.dm

@@ -185,7 +185,7 @@ Thus, the two variables affect pump operation are set in New():
 		return 1
 	playsound(src.loc, 'sound/items/Ratchet.ogg', 50, 1)
 	user << "<span class='notice'>You begin to unfasten \the [src]...</span>"
-	if (do_after(user, 40))
+	if (do_after(user, 40, target = src))
 		user.visible_message( \
 			"[user] unfastens \the [src].", \
 			"<span class='notice'>You have unfastened \the [src].</span>", \