Rusting off the elements system. Makes rust appliable to turfs, adds heretic rust to revenants. (#27367)

* puts rust on hold

* fixes overlays

* defines it

* need this

* fuck

* never work on conflicts during a rpg

* continue work

* rust works

code/datums/status_effects/debuffs.dm

@@ -1431,6 +1431,23 @@
 	alert_type = null
 	status_type = STATUS_EFFECT_REPLACE
 
+/datum/status_effect/rust_corruption
+	alert_type = null
+	id = "rust_turf_effects"
+	tick_interval = 2 SECONDS
+
+/datum/status_effect/rust_corruption/tick()
+	. = ..()
+	if(issilicon(owner))
+		owner.adjustBruteLoss(10)
+		return
+	//We don't have disgust, so...
+	if(ishuman(owner))
+		owner.adjustBrainLoss(2.5)
+		owner.reagents?.remove_all(0.75)
+	else
+		owner.adjustBruteLoss(3) //Weaker than borgs but still constant.
+
 /// This is the threshold where the attack will stun on the last hit. Why? Because it is cool, that's why.
 #define FINISHER_THRESHOLD 7