No shortcut/hotkey for toggling the addon?!

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Is your feature request related to a problem? Please describe. it hampers productivity having to manually click on the addon icon in the toolbar instead of using a hotkey (which isn't available for marker

Describe the solution you'd like add an option to set up a shortcut for toggling the extension

Additional context

In Firefox, this addon has no "option" panel/page where I can set up a shortcut.

In the "Manage Extension Shortcuts" section in Firefox Addon Manager, it lists Marker under "The following extensions do not have shortcuts:"

Please add a shortcut functionality as it would increase productivity. Thanks.