Automatically generate `quarto-web`-ready documentation from Cliffy command descriptions

[cscheid]

It would be great to generate the automatically documentation for the CLI options on quarto-web. Ideally, we'd do it in the same way that we do the documentation for yaml options, by deferring to a single source of truth.

[cderv]

I completely missed this (old) issue ! We should definitely do this, I believe this would solve a bunch of issues we have around outdated CLI help.

@cscheid do you think we can do that for 1.5 ? Or still something we need to defer ?

[mcanouil]

FYI "EPIC":

• Reference for CLI subcommands? #598

[cderv]

Thank @mcanouil. It was linked by @cwickham just above last week already, which made me aware of this issue.

It is now linked clearly in both direction 😄

[cscheid]

We now have this.