Add zombie apocalypse spell

src/main/java/electroblob/wizardry/registry/Spells.java

@@ -242,6 +242,8 @@ public final class Spells {
 
 	public static final Spell stormcloud = placeholder();
 
+	public static final Spell zombie_apocalypse = placeholder();
+
 	@SubscribeEvent
 	public static void register(RegistryEvent.Register<Spell> event){
 
@@ -445,6 +447,8 @@ public final class Spells {
 
 		registry.register(new Stormcloud());
 
+		registry.register(new ZombieApocalypse());
+
 	}
 
 }