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

Once a (tray) menu has been created, it can't have new menu items prepended to the menu.

In my use case I need to be able to prepend items and (partially) clear the tray menu after the application was launched.

e.g. a menu upon launch is as such:

• Lights unavailable
• Preferences
• Quit App

menu later gets an update and becomes:

• Light 1
• Light 2
• Light 3
• Preferences
• Quit App

This means 1 item gets removed, and 3 items are added.

Describe the solution you'd like

I want to be able to clear a menu, so I can simply construct the items again using multiple appends.

I'm working on a PR.

Describe alternatives you've considered

1. Tried to add logic to every menu item to destroy them once I need an update. This however complicates the code a lot.
2. Tried to override a tray menu, but this kept the old menu active.

Additional context