Add Quartz/CoreGraphics controller interface for default k&m events

Source/Core/InputCommon/ControllerInterface/Quartz/Quartz.h

@@ -0,0 +1,14 @@
+// Copyright 2010 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+namespace ciface
+{
+namespace Quartz
+{
+void Init(void* window);
+void DeInit();
+}
+}