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/VmessQRCode.cs

@@ -0,0 +1,43 @@
+namespace ServiceLib.Models.Dto;
+
+/// <summary>
+/// https://github.com/2dust/v2rayN/wiki/
+/// </summary>
+[Serializable]
+public class VmessQRCode
+{
+    [JsonNumberHandling(JsonNumberHandling.AllowReadingFromString | JsonNumberHandling.WriteAsString)]
+    public int v { get; set; } = 2;
+
+    public string ps { get; set; } = string.Empty;
+
+    public string add { get; set; } = string.Empty;
+
+    [JsonNumberHandling(JsonNumberHandling.AllowReadingFromString | JsonNumberHandling.WriteAsString)]
+    public int port { get; set; } = 0;
+
+    public string id { get; set; } = string.Empty;
+
+    [JsonNumberHandling(JsonNumberHandling.AllowReadingFromString | JsonNumberHandling.WriteAsString)]
+    public int aid { get; set; } = 0;
+
+    public string scy { get; set; } = string.Empty;
+
+    public string net { get; set; } = string.Empty;
+
+    public string type { get; set; } = string.Empty;
+
+    public string host { get; set; } = string.Empty;
+
+    public string path { get; set; } = string.Empty;
+
+    public string tls { get; set; } = string.Empty;
+
+    public string sni { get; set; } = string.Empty;
+
+    public string alpn { get; set; } = string.Empty;
+
+    public string fp { get; set; } = string.Empty;
+
+    public string insecure { get; set; } = string.Empty;
+}