Add more options to xray fragment

v2rayN/ServiceLib/Models/Config.cs

@@ -47,6 +47,7 @@
         public SystemProxyItem SystemProxyItem { get; set; }
         public WebDavItem WebDavItem { get; set; }
         public CheckUpdateItem CheckUpdateItem { get; set; }
+        public Fragment4RayItem? Fragment4RayItem { get; set; }
         public List<InItem> Inbound { get; set; }
         public List<KeyEventItem> GlobalHotkeys { get; set; }
         public List<CoreTypeItem> CoreTypeItem { get; set; }

v2rayN/ServiceLib/Models/ConfigItems.cs

@@ -246,4 +246,12 @@
         public bool CheckPreReleaseUpdate { get; set; }
         public List<string>? SelectedCoreTypes { get; set; }
     }
+
+    [Serializable]
+    public class Fragment4RayItem
+    {
+        public string? Packets { get; set; }
+        public string? Length { get; set; }
+        public string? Interval { get; set; }
+    }
 }