Should be possible to choose own usernames for integrated SFTP

It may be because of security reasons but having a random username being generated is not very nice. It would be better if we could choose a username ourselves and Link just verifies if it is available or not.

Could be enabled to choose username when you use your own integrsted ftp. If it should be enabled on our we surgest a prefix of the tenent like e.g. contoso_ or contoso-test_

Not a high priority.