Port web_service from Citra

src/yuzu/discord_impl.h

@@ -0,0 +1,20 @@
+// Copyright 2018 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "yuzu/discord.h"
+
+namespace DiscordRPC {
+
+class DiscordImpl : public DiscordInterface {
+public:
+    DiscordImpl();
+    ~DiscordImpl();
+
+    void Pause() override;
+    void Update() override;
+};
+
+} // namespace DiscordRPC