Update ACT:U and create ACT:A (#1809)

* Update ACT_U
* Create act_a.h
* Create act_a.cpp
* Add service ACT:A
* Add ACT:A source and header
* Fix wrong header

src/core/hle/service/act_a.h

@@ -0,0 +1,23 @@
+// Copyright 2016 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Namespace ACT_A
+
+namespace ACT_A {
+
+class Interface : public Service::Interface {
+public:
+    Interface();
+
+    std::string GetPortName() const override {
+        return "act:a";
+    }
+};
+
+} // namespace