Add Wireguard Mtu

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

@@ -86,6 +86,7 @@ data class V2rayConfig(
                                    var secretKey: String? = null,
                                    val peers: List<WireGuardBean>? = null,
                                    var reserved: List<Int>? = null,
+                                   var mtu :Int? = null
         ) {
 
             data class VnextBean(var address: String = "",