Add field "staff_maintained"

[maelle]

@sckott according to the curation policy packages mentioned by staff should be marked as such, and there is now a badge for that in the new website design. I think this means packages by you and @jeroen (not sure I can vouch for my packages as staff because of the definition of my tasks 🤔 ).

Cc @noamross

[sckott]

(i assume mentioned should be maintained?)

I think it can be automated, just by using the maintainer of each pkg against an array of staff names. I think any you maintain @maelle should be included

[maelle]

thanks.

I think this should happen at registry creation to allow us to add any exception if needed, and also because we might need the info in other places.

[sckott]

https://github.com/ropensci/roregistry/blob/gh-pages/registry.json

[maelle]

thank you 🙏