Add click, drag and release in menus

[Poopooracoocoo]

Is your feature request related to a problem? Please describe.

With mice and touchpads, you usually find that menus support clicking and dragging to select an item in a menu.

It'd be great to see this in the demo.

Additional context

You can go through submenus of menus in a menu bar quickly using this. It's also in Android and Chrome for Android, many desktop apps and in many games. It's also seen across Windows (in WPF, win32, WinForms), macOS and GNOME and KDE. You sometimes also see this on comboboxes.

cheers :)