Provide a LDAP deletion option

As an admin, I want to be able, to delete an LDAP account and have a special form, to initiate this process.

UAC

• Provide a GDPR Module
• Select a user to delete in GDPR Module
• Add Gitlab Ticketnummer / OTRS Link
• Add Info Message
• Conirm deletion
• create an entry with username and email in old_user table
• delete user in LDAP
• Create an OTRS ticket with instructions for the server team for additional systems (admin@typo3.org)
• extend old user with deletion date
• extend old user with name of admin user who initiated the deletion
• extend old user with link to Gitlab / OTRS Ticket