Add LDAP support to sourcehut
I believe we could reuse some sourcehut parts to ungleich's benefits. I already wrote minimal logic for LDAP support in sourcehut's meta app, and need to extend it in order to support password-reset and registrations. It could help spreading out the word about ungleich in the sourcehut circles.
Upstream issue: https://todo.sr.ht/~sircmpwn/meta.sr.ht/144