Add packet logger and server

webrtc/tools/network_tester/server.cc

+/*
+ *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "webrtc/tools/network_tester/test_controller.h"
+
+int main() {
+  webrtc::TestController server(9090, 9090, "server_config.dat",
+                                "server_packet_log.dat");
+  while (!server.IsTestDone()) {
+    server.Run();
+  }
+}