Replaces CLEAN_ON_MOVE_1 flag with cleaning component

CLEAN_ON_MOVE_1 is a flag checked on every atom movable's Moved() and
triggers a janiborg/upgraded janicart clean on the turf if present.

Replacing this with a component does the same thing and frees up a flag
slot.

Also fixes a bug where a spawned in "upgraded" janicart wouldn't
actually clean the floors.

code/datums/components/cleaning.dm

@@ -0,0 +1,36 @@
+/datum/component/cleaning
+
+/datum/component/cleaning/Initialize()
+	RegisterSignal(list(COMSIG_MOVABLE_MOVED), .proc/Clean)
+
+/datum/component/cleaning/proc/Clean()
+	var/atom/movable/AM = parent
+	if(!istype(AM))
+		return
+	var/turf/tile = AM.loc
+	if(isturf(tile))
+		tile.clean_blood()
+		for(var/A in tile)
+			if(is_cleanable(A))
+				qdel(A)
+			else if(istype(A, /obj/item))
+				var/obj/item/cleaned_item = A
+				cleaned_item.clean_blood()
+			else if(ishuman(A))
+				var/mob/living/carbon/human/cleaned_human = A
+				if(cleaned_human.lying)
+					if(cleaned_human.head)
+						cleaned_human.head.clean_blood()
+						cleaned_human.update_inv_head()
+					if(cleaned_human.wear_suit)
+						cleaned_human.wear_suit.clean_blood()
+						cleaned_human.update_inv_wear_suit()
+					else if(cleaned_human.w_uniform)
+						cleaned_human.w_uniform.clean_blood()
+						cleaned_human.update_inv_w_uniform()
+					if(cleaned_human.shoes)
+						cleaned_human.shoes.clean_blood()
+						cleaned_human.update_inv_shoes()
+					cleaned_human.clean_blood()
+					cleaned_human.wash_cream()
+					to_chat(cleaned_human, "<span class='danger'>[AM] cleans your face!</span>")