优化更新代码，添加界面功能并整合

ShrlAlgo.RvKits/ModelManager/SeparateModelCmd.cs

@@ -0,0 +1,18 @@
+using Autodesk.Revit.Attributes;
+using Autodesk.Revit.DB;
+
+using Nice3point.Revit.Toolkit.External;
+
+
+namespace ShrlAlgo.RvKits.ModelManager;
+[Transaction(TransactionMode.Manual)]
+[Regeneration(RegenerationOption.Manual)]
+public class SeparateModelCmd : ExternalCommand
+{
+    public override void Execute()
+    {
+        //var win = new SeparateModelWin();
+        //win.Show();
+        SingletonChildWindowManager.ShowOrActivate<SeparateModelWin, SeparateModelViewModel>();
+    }
+}