web_service: Add skeleton project.

src/web_service/web_backend.cpp

@@ -0,0 +1,9 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "web_service/web_backend.h"
+
+namespace WebService {
+
+} // namespace WebService