Adds Antag Tokens!

They're a novelty coin with a syndie helmet (valid) on one side and a salid (salid) on the other.
Found as a prize in arcade machines, Sec can also get one from their vendor as a premium item.

code/game/machinery/computer/arcade.dm

@@ -31,7 +31,8 @@
 							/obj/item/toy/foamblade									= 2,
 							/obj/item/toy/redbutton									= 2,
 							/obj/item/toy/owl										= 2,
-							/obj/item/toy/griffin									= 2
+							/obj/item/toy/griffin									= 2,
+							/obj/item/weapon/coin/antagtoken						= 2,
 							)
 
 /obj/machinery/computer/arcade/New()

code/game/machinery/vending.dm

@@ -779,6 +779,7 @@
 	products = list(/obj/item/weapon/restraints/handcuffs = 8,/obj/item/weapon/restraints/handcuffs/cable/zipties = 10,/obj/item/weapon/grenade/flashbang = 4,/obj/item/device/flash/handheld = 5,
 					/obj/item/weapon/reagent_containers/food/snacks/donut = 12,/obj/item/weapon/storage/box/evidence = 6,/obj/item/device/flashlight/seclite = 4)
 	contraband = list(/obj/item/clothing/glasses/sunglasses = 2,/obj/item/weapon/storage/fancy/donut_box = 2)
+	premium = list(/obj/item/weapon/coin/antagtoken = 1)
 
 /obj/machinery/vending/hydronutrients
 	name = "\improper NutriMax"

code/modules/mining/ores_coins.dm

@@ -280,6 +280,16 @@
 	sideslist = list("heads")
 	value = 20
 
+/obj/item/weapon/coin/antagtoken
+	name = "antag token"
+	icon_state = "coin_valid_valid"
+	cmineral = "valid"
+	desc = "A novelty coin that helps the heart know what hard evidence cannot prove."
+	sideslist = list("valid", "salid")
+	value = 20
+
+/obj/item/weapon/coin/antagtoken/New()
+	return
 
 /obj/item/weapon/coin/attackby(obj/item/weapon/W as obj, mob/user as mob, params)
 	if(istype(W, /obj/item/stack/cable_coil))