Automatically gather and add articles from all `pacta.*` packages to the pkgdown website

[jdhoffa]

Since we are aiming to keep track of methodology modules in our pacta.* packages, it would be good to find a way to automatically pull these articles and display them in the pactaverse pkgdown website.

Relates to #18

AB#9889

[jdhoffa]

This package that @maurolepore seems to address this problem:
https://maurolepore.github.io/dverse/

[maurolepore]

@jdhoffa indeed it seems like a great use of dverse :-) but unfortunately it won't work as is.

dverse only works with installed documentation. It can't see articles but it can see vignettes, for example

A possible simple solution would be to turn your articles to vignettes. The current version of dverse doesn't link vignettes (you can see that also in the example above) but I think that's a good idea and I would be happy to implement that.