[REVIEW ME PLS] Battle Monsters Card Game, or the last* PR. (#5141)

Overview
Adds Battle Monster cards. Battle Monsters is a collectable card game clone like Yugioh or magic the gathering. Players can purchase card packs and use them in games with actual rules to them.

Checklist
Card Generation Framework: 100%
Sprites: 80%
Game Rules: 90%
Deck Framework: 5%
Monster Cards: 20%
Spell/Trap Cards: 5%
Obtainable Status: 0%

code/modules/mining/coins.dm

@@ -44,6 +44,10 @@
 	name = "platinum coin"
 	icon_state = "coin_adamantine"
 
+/obj/item/weapon/coin/battlemonsters
+	name = "battlemonsters coin"
+	icon_state = "coin_battlemonsters"
+
 /obj/item/weapon/coin/attackby(obj/item/weapon/W as obj, mob/user as mob)
 	if(iscoil(W))
 		var/obj/item/stack/cable_coil/CC = W