Map LDAP atribute to mailbox account's "Full name"

[git529]

Summary

Currently, the LDAP functionality incorporates mapping for the LDAP user's mail attribute which it uses to add/sync the LDAP user to the mailcow domain's mailbox.

It would be great if the LDAP functionality could also have a mapping of certain LDAP user's attributes to the "Full name" field of the mailcow mailbox.

Motivation

When setting up LDAP as identity provider in mailcow to provision/sync email accounts, admins would be able to map the LDAP user's full name to an attribute (name, nc, displayName, etc) in their LDAP server to the newly created or synced mailbox's "Full name" of the user's account in mailcow.

Additional context