Refactor models into sub-namespaces

Move many model classes into new sub-namespaces (ServiceLib.Models.CoreConfigs, ServiceLib.Models.Configs, ServiceLib.Models.Dto, ServiceLib.Models.Entities). Update GlobalUsings in ServiceLib, v2rayN.Desktop, v2rayN and add a tests GlobalUsings file to reference the new namespaces. Adjust static using directives in ClashApiManager and ClashProxiesViewModel to use ServiceLib.Models.Dto. This is a reorganization/rename of files and namespaces with no functional changes.

v2rayN/ServiceLib/Models/Dto/ProfileItemModel.cs

@@ -0,0 +1,51 @@
+namespace ServiceLib.Models.Dto;
+
+[Serializable]
+public class ProfileItemModel : ReactiveObject
+{
+    public bool IsActive { get; set; }
+    public string IndexId { get; set; }
+    public EConfigType ConfigType { get; set; }
+    public string Remarks { get; set; }
+    public string Address { get; set; }
+    public int Port { get; set; }
+    public string Network { get; set; }
+    public string StreamSecurity { get; set; }
+    public string Subid { get; set; }
+    public string SubRemarks { get; set; }
+    public int Sort { get; set; }
+
+    [Reactive]
+    public int Delay { get; set; }
+
+    public decimal Speed { get; set; }
+
+    [Reactive]
+    public string DelayVal { get; set; }
+
+    [Reactive]
+    public string SpeedVal { get; set; }
+
+    [Reactive]
+    public string TodayUp { get; set; }
+
+    [Reactive]
+    public string TodayDown { get; set; }
+
+    [Reactive]
+    public string TotalUp { get; set; }
+
+    [Reactive]
+    public string TotalDown { get; set; }
+
+    public string GetSummary()
+    {
+        var summary = $"[{ConfigType}] {Remarks}";
+        if (!ConfigType.IsComplexType())
+        {
+            summary += $"({Address}:{Port})";
+        }
+
+        return summary;
+    }
+}