Document testing tools/infrastructure for Cypht

[marclaporte]

We want documentation a new developer could set up.

On 2022-08-12, Jason Munro wrote:
"the travis ci setup preps a host to run the tests so that might help https://github.com/jasonmunro/cypht/tree/master/.travis running the unit tests via phpunit is not too hard to setup, running the UI tests is harder as it requires a full functional E-mail stack + web server
the full suite of checks I run are here: https://github.com/jasonmunro/cypht/blob/master/scripts/commit_check.sh"

[marclaporte]

So do we do this in the https://github.com/jasonmunro/cypht/wiki or Markdown at https://github.com/jasonmunro/cypht/tree/master/tests or something else?

[marclaporte]

Switching to a GitHub organization (like we did with Cypht) would cause issues:
virtualmin/Virtualmin-Config#9