修改了CopyTo方法，使用反射可以将列表的内容也可以复制

Data/Entities/DbMenu.cs

@@ -0,0 +1,16 @@
+using SqlSugar;
+
+namespace PMSWPF.Data.Entities;
+
+[SugarTable("Menu")]
+public class DbMenu
+{
+    [SugarColumn(IsPrimaryKey = true, IsIdentity = true)]
+    public  int Id { get; set; }
+    public string Icon { get; set; }
+    public string Name { get; set; }
+    public int ParentId { get; set; }
+    
+    [SugarColumn(IsIgnore = true)]
+    public List<DbMenu> Items { get; set; }
+}