Update LocalizeGptWindow.cs

Add model gpt-4o

Author: hikedev

Editor/LocalizeGptWindow/LocalizeGptWindow.cs

@@ -13,7 +13,8 @@ public partial class LocalizeGptWindow : EditorWindow
             "gpt-4-0125-preview",
             "gpt-4-1106-preview",
             "gpt-3.5-turbo-0125",
-            "gpt-3.5-turbo-1106"
+            "gpt-3.5-turbo-1106",
+            "gpt-4o"
         };
 
         private float _temperature;