Generate our docs to a separate website

[t-persson]

Description

We should generate and host our documentation on a separate website so that the documentation is more easily available.
Similar to what's done with cdevents(https://cdevents.dev/docs/)

Motivation

More professional and easier than linking directly to a github repository.

Exemplification

Whenever I want to send people to know more about Eiffel I tend to give them a link to Sepia and github. This is not a good introduction to the technical side of Eiffel.

Benefits

Eiffel documentation is more easily available for others.

Possible Drawbacks

The hosting and making sure it is up to date. Automation is required.

[m-linner-ericsson]

When looking at this do take a look at https://jamstack.org/generators/ to see if we can use something there.