Add menu options for Mux

V2rayNG/app/src/main/kotlin/com/v2ray/ang/dto/V2rayConfig.kt

@@ -292,7 +292,10 @@ data class V2rayConfig(
             }
         }
 
-        data class MuxBean(var enabled: Boolean, var concurrency: Int = 8)
+        data class MuxBean(var enabled: Boolean,
+                           var concurrency: Int = 8,
+                           var xudpConcurrency: Int = 8,
+                           var xudpProxyUDP443: String = "",)
 
         fun getServerAddress(): String? {
             if (protocol.equals(EConfigType.VMESS.name, true)