- tweak: refactor funny

Nebula.Launcher/ViewHelper/ViewModelRegisterAttribute.cs

@@ -0,0 +1,16 @@
+using System;
+
+namespace Nebula.Launcher.ViewHelper;
+
+[AttributeUsage(AttributeTargets.Class)]
+public class ViewModelRegisterAttribute : Attribute
+{
+    public Type? Type { get; }
+    public bool IsSingleton { get; }
+
+    public ViewModelRegisterAttribute(Type? type = null, bool isSingleton = true)
+    {
+        Type = type;
+        IsSingleton = isSingleton;
+    }
+}