chore: adjusted the project directory structure

app/settingsdialog.h

@@ -0,0 +1,25 @@
+#ifndef SETTINGSDIALOG_H
+#define SETTINGSDIALOG_H
+
+#include <QObject>
+#include <QDialog>
+
+class QCheckBox;
+class QComboBox;
+class SettingsDialog : public QDialog
+{
+    Q_OBJECT
+public:
+    explicit SettingsDialog(QWidget *parent = nullptr);
+    ~SettingsDialog();
+
+signals:
+
+public slots:
+
+private:
+    QCheckBox * m_stayOnTop = nullptr;
+    QComboBox * m_doubleClickBehavior = nullptr;
+};
+
+#endif // SETTINGSDIALOG_H