Expand "User Profile Attributes" configuration options

Currently and according to the manual, in the latest version, the User Profile Attributes configuration in ldap allows you to associate ldap fields that are then displayed in the contacts application.

This is very useful for GNOME users who, with online accounts, allow the integration of both applications.

However, the "User Profile Attributes" configuration options are minimal and in GNOME the contact data is in fields that have nothing to do with their name.

For example, it is normal to have at least several phones and "User Profile Attributes" only allows one, so you have to put the rest in other fields with names that are not representative such as status or role.

It would be very interesting to be able to add, even through occ, association fields that are then displayed in contacts with vcard4 format, such as for example

--mapping=TEL:telephoneNumber \
--mapping=TEL;TYPE=FAX:facsimileTelephoneNumber
--mapping=TEL;TYPE=CELL:internationaliSDNNumber
--mapping=TEL;TYPE=VOICE:pager

The issue names no files, tests, or entry points. Start by locating the existing LDAP “User Profile Attributes” configuration and the contacts vCard4 generation path; done means supporting multiple configurable LDAP-to-vCard mappings, including the requested phone types, with an available occ configuration path.