UwUMail Server 0.25.0

Added

• Pairing with UwUAuth under Server → Settings → UwUAuth: paste the pairing code (or the text of
  its QR code), and the OpenID Connect login is set up without copying a client ID or secret.
  Unpairing switches it off again. See docs/uwuauth.md.
• SCIM 2.0 at /scim/v2 for UwUAuth: people become mailboxes that log in with UwUAuth, are locked
  and unlocked, made admins, and moved to the trash from there. Only addresses on domains of this
  server; groups are kept but change nothing about mail. Mailboxes that were here before only get
  UwUAuth's id noted: they are linked at the first UwUAuth login with a verified email, and SCIM
  does not lock, promote or remove them. Wrong SCIM tokens have a limit of their own, apart from
  wrong passwords. Pairing asks for the password on an older login.
• OpenID Connect: auth.oidc.sync_admin applies the admin claim at every login,
  auth.oidc.scopes sets the scopes asked for, and auth.oidc.private_network allows a login
  service in the local network (its host only, HTTPS with a trusted certificate still required).

Fixed

• The server builds on macOS again (the DANE resolver setup used a Linux-only error type).