Move map specific functions into separate scripts

Perk pause removal done with replaceFunc
Removes need for replacing power_off_func on every power item

scripts/zm/replaced/_zm_perks.gsc

@@ -0,0 +1,8 @@
+#include maps\mp\_utility;
+#include common_scripts\utility;
+#include maps\mp\zombies\_zm_utility;
+
+perk_pause( perk )
+{
+	// disabled
+}