users: implement backup/restore
I used this guide for reference: https://tylersguides.com/articles/backup-restore-openldap/
Signed-off-by: nbenedek contact@nbenedek.me
I used this guide for reference: https://tylersguides.com/articles/backup-restore-openldap/
Signed-off-by: nbenedek contact@nbenedek.me