[Quest API] Add GetHealScale() and GetSpellScale() to Perl and Lua. (#1515)

zone/lua_npc.h

@@ -144,6 +144,8 @@ public:
 	uint16 CountItem(uint32 item_id);
 	uint32 GetItemIDBySlot(uint16 slot_id);
 	uint16 GetFirstSlotByItemID(uint32 item_id);
+	float GetHealScale();
+	float GetSpellScale();
 };
 
 #endif