Qt: Implement button mapping dialogs

Source/Core/DolphinQt2/Config/Mapping/WiimoteEmuGeneral.h

@@ -0,0 +1,31 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "DolphinQt2/Config/Mapping/MappingWidget.h"
+
+class QComboBox;
+class WiimoteEmuExtension;
+
+class WiimoteEmuGeneral final : public MappingWidget
+{
+public:
+  explicit WiimoteEmuGeneral(MappingWindow* window, WiimoteEmuExtension* extension);
+
+  InputConfig* GetConfig() override;
+
+private:
+  void LoadSettings() override;
+  void SaveSettings() override;
+  void CreateMainLayout();
+  void Connect();
+  void OnAttachmentChanged(int index);
+
+  // Main
+  QHBoxLayout* m_main_layout;
+
+  // Extensions
+  QComboBox* m_extension_combo;
+
+  WiimoteEmuExtension* m_extension_widget;
+};