refactor: Renderer (#694)

* Simplified SwapCHain, Device and DeviceContext pointers
* Added DX and WndProc callback registration
* Cleaned up GUI code
* Optimised Mouse Toggle

src/services/context_menu/context_menu_service.cpp

@@ -300,7 +300,7 @@ namespace big
 				continue;
 			}
 
-			if (g_gui.m_opened)
+			if (g_gui->is_open())
 			{
 				script::get_current()->yield();
 				continue;