xray mux add more option

https://github.com/2dust/v2rayN/issues/5565

v2rayN/ServiceLib/Models/Config.cs

@@ -41,6 +41,7 @@
         public UIItem uiItem { get; set; }
         public ConstItem constItem { get; set; }
         public SpeedTestItem speedTestItem { get; set; }
+        public Mux4RayItem mux4RayItem { get; set; }
         public Mux4SboxItem mux4SboxItem { get; set; }
         public HysteriaItem hysteriaItem { get; set; }
         public ClashUIItem clashUIItem { get; set; }

v2rayN/ServiceLib/Models/ConfigItems.cs

@@ -197,6 +197,14 @@
         public int Index { get; set; }
     }
 
+    [Serializable]
+    public class Mux4RayItem
+    {
+        public int? concurrency { get; set; }
+        public int? xudpConcurrency { get; set; }
+        public string? xudpProxyUDP443 { get; set; }
+    }
+
     [Serializable]
     public class Mux4SboxItem
     {

v2rayN/ServiceLib/Models/V2rayConfig.cs

@@ -343,15 +343,10 @@ namespace ServiceLib.Models
 
     public class Mux4Ray
     {
-        /// <summary>
-        ///
-        /// </summary>
         public bool enabled { get; set; }
-
-        /// <summary>
-        ///
-        /// </summary>
-        public int concurrency { get; set; }
+        public int? concurrency { get; set; }
+        public int? xudpConcurrency { get; set; }
+        public string? xudpProxyUDP443 { get; set; }
     }
 
     public class Response4Ray