Secure Airlock update!

4 new wires, completely randomised! (2nd bolt wire, 2 only-drop-bolts wires, and an AI alert wire that alerts an AI 20% of the time, when messed with)
Emags have a limited number of uses, between 3 and 7, and cost 5 TC
Hacktools are more useful than they were, and have a lower chance of alerting the AI
(This is unmapped ATM)

code/modules/mining/mine_items.dm

@@ -86,6 +86,11 @@ proc/move_mining_shuttle()
 /obj/machinery/computer/mining_shuttle/attackby(obj/item/weapon/W as obj, mob/user as mob)
 
 	if (istype(W, /obj/item/weapon/card/emag))
+		var/obj/item/weapon/card/emag/E = W
+		if(E.uses)
+			E.uses--
+		else
+			return
 		src.req_access = list()
 		hacked = 1
 		usr << "You fried the consoles ID checking system. It's now available to everyone!"