Binary package “classicmenu-indicator” in ubuntu mantic

indicator showing the main menu from GNOME Classic

 ClassicMenu Indicator is a notification area applet (application
 indicator) for the top panel of Ubuntu’s Unity desktop environment
 and other environments that support the AppIndicator protocol.
 .
 It provides a simple way to get a GNOME Classic-style application
 menu for those who prefer this over the Unity dash menu.