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

In a small terminal windows, the help footer overflows quite a lot on the right.
This happens a lot when I use jjui in a terminal split or a tmux pane.

Describe the solution you'd like

The default footer could be shorter, wrapped on several lines, to be visible on small windows.
Best case, it is reactive to the terminal window width.

Describe alternatives you've considered

I resize my pane/window by hand after opening jjui. It's okay.

Why current features fail to cover this request

Opening the help modal with ? helps a bit, but it is a big modal and is non-reactive.
So it is equally clipped in narrow terminal surfaces.

Additional context