Qt: Implement hotkeys (+ configuration)

Source/Core/DolphinQt2/HotkeyScheduler.h

@@ -0,0 +1,37 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <thread>
+
+#include <QObject>
+
+#include "Common/Flag.h"
+
+class HotkeyScheduler : public QObject
+{
+  Q_OBJECT
+public:
+  explicit HotkeyScheduler();
+  ~HotkeyScheduler();
+
+  void Start();
+  void Stop();
+signals:
+  void ExitHotkey();
+  void FullScreenHotkey();
+  void StopHotkey();
+  void PauseHotkey();
+  void ScreenShotHotkey();
+  void SetStateSlotHotkey(int slot);
+  void StateLoadSlotHotkey();
+  void StateSaveSlotHotkey();
+
+private:
+  void Run();
+
+  Common::Flag m_stop_requested;
+  std::thread m_thread;
+};