Starting implement deserialize migration

2DGAMELIB/_2DGAMELIB/ObjExtensions.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace _2DGAMELIB
+{
+    public static class ObjExtensions 
+    {
+        static readonly Dictionary<string, string> KeyMap = new()
+        {
+            ["咳"] = "Cough"
+        };
+
+        public static void MigrateKeys(this Obj obj)
+        {
+            var newDict = new OrderedDictionary<string, Difs>();
+
+            foreach (var key in obj.Keys)
+            {
+                var newKey = KeyMap.TryGetValue(key, out var mapped) ? mapped : key;
+
+                newDict.Add(newKey, obj.Difss[key]);
+            }
+
+            obj.Difss = newDict;
+        }
+    }
+}