InputCommon: move Setting classes out of ControlGroup

Source/Core/InputCommon/ControllerEmu/Setting/Setting.h

@@ -0,0 +1,15 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+namespace ControllerEmu
+{
+enum class SettingType
+{
+  NORMAL,   // normal settings are saved to configuration files
+  VIRTUAL,  // virtual settings are not saved at all
+};
+
+}  // namespace ControllerEmu