Add controller window and single joycon top view

src/yuzu/debugger/controller.h

@@ -0,0 +1,28 @@
+// Copyright 2015 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <QWidget>
+
+class QAction;
+class QHideEvent;
+class QShowEvent;
+
+class ControllerDialog : public QWidget {
+    Q_OBJECT
+
+public:
+    explicit ControllerDialog(QWidget* parent = nullptr);
+
+    /// Returns a QAction that can be used to toggle visibility of this dialog.
+    QAction* toggleViewAction();
+
+protected:
+    void showEvent(QShowEvent* ev) override;
+    void hideEvent(QHideEvent* ev) override;
+
+private:
+    QAction* toggle_view_action = nullptr;
+};