chore: adjusted the project directory structure

app/settings.h

@@ -0,0 +1,41 @@
+#pragma once
+
+#include <QObject>
+#include <QSettings>
+
+enum DoubleClickBehavior {
+    ActionDoNothing,
+    ActionCloseWindow,
+    ActionMaximizeWindow,
+
+    ActionStart = ActionDoNothing,
+    ActionEnd = ActionMaximizeWindow
+};
+
+class Settings : public QObject
+{
+    Q_OBJECT
+public:
+    static Settings *instance();
+
+    bool stayOnTop();
+    DoubleClickBehavior doubleClickBehavior();
+
+    void setStayOnTop(bool on);
+    void setDoubleClickBehavior(DoubleClickBehavior dcb);
+
+    static QString doubleClickBehaviorToString(DoubleClickBehavior dcb);
+    static DoubleClickBehavior stringToDoubleClickBehavior(QString str);
+
+private:
+    Settings();
+
+    static Settings *m_settings_instance;
+
+    QSettings *m_qsettings;
+
+signals:
+
+public slots:
+};
+