Add shortcut for AI feature

[MR-d3R]

The AI in sidebar looks good, but it would be really awesome if you add a shortcut for more usability. Clicking by mouse every time to open chat is very uncomfortable and takes long time!

Also it would be convenient to open some items from sidebar menu on the left side, whereas AI opened on the right side. Thanks! 

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

[No3371]

The AI feature is integrated into the shared sidebar... and the fact that Firefox does not provides total shortcut control to the sidebar panels makes it very inconvenient to use when you runs extensions like vertical tab bars that occupy sidebar and is always on.

If we can freely assign shortcut to sidebar panels, it'll be very easy to switch panels, otherwise in most cases we can only choose one sidebar panel and ditch all other features that use the sidebar.

[fossist]

1. Toolbar Button to open AI Sidebar.

2. Keyboard Shortcut to open AI Sidebar.