How to create a new Keybase proof

Instead of waiting for the Keybase team to add suggested proofs on #518, I decided to try and do it myself. I created a Mastodon scraper for https://github.com/keybase/proofs but I have no idea how to test it or how to integrate in it the client. It seems there is a lot of duplicates between the Public proof system (https://github.com/keybase/proofs) and the PVL (https://keybase.io/docs/client/pvl_spec), but I don't know if it's relevant. So my question is: _is there a doc on how to add a new proof on Keybase?_

Start by reviewing the linked Keybase proofs repository and the PVL specification to compare how proofs are defined and integrated. Document the supported steps for adding a new proof, including testing and client integration, if those steps can be established.

Written by the indexing model from the issue text.