Change handler interface should support the generate handler with enum.

osu.Game.Rulesets.Karaoke/Edit/ChangeHandlers/IAutoGenerateChangeHandler.cs

@@ -1,8 +1,21 @@
 // Copyright (c) andy840119 <[email protected]>. Licensed under the GPL Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
+
 namespace osu.Game.Rulesets.Karaoke.Edit.ChangeHandlers;
 
+/// <summary>
+/// This interface is defined checking able to generate or detect the property, and make the change for the property.
+/// </summary>
+/// <typeparam name="TEnum"></typeparam>
+public interface IEnumAutoGenerateChangeHandler<in TEnum> where TEnum : Enum
+{
+    bool CanGenerate(TEnum property);
+
+    void AutoGenerate(TEnum property);
+}
+
 /// <summary>
 /// This interface is defined checking able to generate or detect the property, and make the change for the property.
 /// </summary>