Add menu to toggle notifications

include/ui/Menu.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <QMenu>
+
+class Menu : public QMenu
+{
+public:
+	Menu(QWidget *parent = nullptr)
+	    : QMenu(parent)
+	{
+		setFont(QFont("Open Sans", 10));
+		setStyleSheet(
+			"QMenu { background-color: white; margin: 0px;}"
+			"QMenu::item { padding: 7px 20px; border: 1px solid transparent; margin: 2px 0px; }"
+			"QMenu::item:selected { background: rgba(180, 180, 180, 100); }");
+	};
+
+protected:
+	void leaveEvent(QEvent *e)
+	{
+		Q_UNUSED(e);
+
+		hide();
+	}
+};