adds ticket redemption

the commits that added prize tickets to here and virgo missed this, i found where it came form (Cit) and copied it over, tested and it works fine

code/game/machinery/computer/arcade.dm

@@ -1322,4 +1322,18 @@
 		wintick = 0
 		gameStatus = "CLAWMACHINE_NEW"
 		emagged = 1
-		return 1
+		return 1
+		
+/obj/machinery/computer/arcade/attackby(obj/item/O, mob/user, params)
+	if(istype(O, /obj/item/stack/arcadeticket))
+		var/obj/item/stack/arcadeticket/T = O
+		var/amount = T.get_amount()
+		if(amount <2)
+			to_chat(user, "<span class='warning'>You need 2 tickets to claim a prize!</span>")
+			return
+		prizevend(user)
+		T.pay_tickets()
+		T.update_icon()
+		O = T
+		to_chat(user, "<span class='notice'>You turn in 2 tickets to the [src] and claim a prize!</span>")
+		return