Feature Request: (Add option to) publish list-key to web key directory

Problem:

Since many mailclients are moving from SKS to verified keyservers and WKD, it has become rather cumbersome to publish a whole list key.

For example, when publishing a key to keys.openpgp.org, you would need to verify the identity for its sub-identites too (list-request or list-owner), and for an encrypted-only list you would need to fish the verification link out of the attachment of the bounce-notification

(I am aware that you can write to list-sendkey for the public key, but many schleuder users are either not aware or generally alienated by the idea of managing a subscription via mail commands)

Solution

It would be great if schleuder could publish it's list keys via web key directory. GnuPG >= 2.2.14 includes a web key service, so this might be possible without adding additional dependencies to schleuder.

I do not know ruby (yet) and my programming experience is almost none, but if you approve the idea I could a look at the codebase and see if I can do a contribution (..and maybe you already know a convenient way to do this and can point me to the direction 😄 )