FS: Added stubbed code to intercept and decode file system service functions.

FS: Added to CMakeLists.txt

src/core/hle/service/fs.h

@@ -0,0 +1,31 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Namespace FS_User
+
+namespace FS_User {
+
+/// Interface to "fs:USER" service
+class Interface : public Service::Interface {
+public:
+
+    Interface();
+
+    ~Interface();
+
+    /**
+     * Gets the string port name used by CTROS for the service
+     * @return Port name of service
+     */
+    const char *GetPortName() const {
+        return "Ufs:";
+    }
+};
+
+} // namespace