proto for socks server

proxy/socks/server_config.proto

@@ -0,0 +1,18 @@
+syntax = "proto3";
+
+package com.v2ray.core.proxy.socks;
+option go_package = "socks";
+
+import "v2ray.com/core/common/net/address.proto";
+
+message ServerConfig {
+  enum AuthType {
+    NO_AUTH = 0;
+    PASSWORD = 1;
+  }
+  AuthType auth_type = 1;
+  map<string, string> accounts = 2;
+  com.v2ray.core.common.net.AddressPB address = 3;
+  bool udp_enabled = 4;
+  uint32 timeout = 5;
+}