Allows defib units to be used as medical borg upgrades, adds message to borgs when they recieve an upgrade, re-organizes borg attackby(). (#48805)

* Delete stale.yml

* Create stale.yml

* clear

* Can now replace the defib pack with an upgrade card to get the pack back.

* less redundant checks

* borg > cyborg text changes

code/game/objects/items/robot/robot_upgrades.dm

@@ -428,10 +428,18 @@
 	icon_state = "cyborg_upgrade3"
 	require_module = 1
 	module_type = list(/obj/item/robot_module/medical)
+	var/backpack = FALSE //True if we get the defib from a physical backpack unit rather than an upgrade card, so that we can return that upon deactivate()
+
+/obj/item/borg/upgrade/defib/backpack
+	backpack = TRUE
 
 /obj/item/borg/upgrade/defib/action(mob/living/silicon/robot/R, user = usr)
 	. = ..()
 	if(.)
+		var/obj/item/borg/upgrade/defib/backpack/BP = locate() in R //If a full defib unit was used to upgrade prior, we can just pop it out now and replace
+		if(BP)
+			BP.deactivate(R, user)
+			to_chat(user, "<span class='notice'>You remove the defibrillator unit to make room for the compact upgrade.</span>")
 		var/obj/item/twohanded/shockpaddles/cyborg/S = new(R.module)
 		R.module.basic_modules += S
 		R.module.add_module(S, FALSE, TRUE)
@@ -441,6 +449,10 @@
 	if (.)
 		var/obj/item/twohanded/shockpaddles/cyborg/S = locate() in R.module
 		R.module.remove_module(S, TRUE)
+		if(backpack)
+			new /obj/item/defibrillator(get_turf(R))
+			qdel(src)
+		
 
 /obj/item/borg/upgrade/processor
 	name = "medical cyborg surgical processor"