Awkward Harbor login flow: Take the password from stdin

[Vad1mo]

like the --password-stdin flag in Docker login is beneficial for security as it allows the password to be provided via standard input, preventing it from being exposed in command-line history or logs, enhancing overall password protection practices.

It would make sense if the harbor-cli followed the same pattern.

• Accept the password from stdin

[ZiyanK]

Hello @Vad1mo . I would like to work on this issue.