[Bugfix] Add SetItemCooldown to tell client exact timer of item when clicked and export to perl and lua (#2795)

Items that are on cooldown but client doesn't show.. clicking item will fix the timer in client

zone/lua_client.h

@@ -463,6 +463,7 @@ public:
 	bool CanEnterZone(std::string zone_short_name, int16 instance_version);
 	void SendPath(Lua_Mob target);
 	void ResetItemCooldown(uint32 item_id);
+	void SetItemCooldown(uint32 item_id, uint32 in_time);
 
 	void ApplySpell(int spell_id);
 	void ApplySpell(int spell_id, int duration);