[Feature]: Add codemeta json to update_citation

[wlangera]

Feature description

Would you like to add a codemeta.json file to a package repository with codemetar::write_codemeta to update_citation?
Or is there a reason it is not implemented currently?

Why is this needed?

https://github.com/ropensci/codemetar#why-create-a-codemetajson-for-your-package

Proposed solution

Add codemetar::write_codemeta to citeme (?)

Code of Conduct

• I agree to follow this project's Code of Conduct