Adapt click UI changes error report tests
Adapt tests with patched click

Specially
F401 	unused-import
that I was missing
https://beta.ruff.rs/docs/rules/#pyflakes-f

Use Path().{read,write}_txt() when possible

To avoid following report:
W0622: Redefining built-in 'license' (redefined-builtin)

It doesn’t makes sense to keep displaying outdated license
From the console display of files, there is six languages versus two from websites
Less code means less maintenance

Check if it is running on an headless system
Define new `--g1-license-web/-w` general option

Define language prompt f() based on the available languages
(keys of the dicts), and use click.prompt()

Write tests around `license` cmd