Enable interactive provision of password

[jmcp]

Adds support for providing a password interactively rather than on the command line.

[ReagentX]

Thank you for your contribution! The first thing that comes to mind is that this shouldn't be another CLI flag; rather, if we detect the backup is encrypted and the user did not pass -x, it should automatically request them to enter the password. What are your thoughts?

[ReagentX]

Are we sure rpassword is the best dependency add here?

[jmcp]

Are we sure rpassword is the best dependency add here?

I don't know for sure, it's the first crate that was suggested when I went looking for a getpass() equivalent. I'm coming from the C and Python worlds where I'm very familiar with the standard libraries, still feeling my way with Rust.

Do you have a different suggestion? Very happy to try one

[jmcp]

Thank you for your contribution! The first thing that comes to mind is that this shouldn't be another CLI flag; rather, if we detect the backup is encrypted and the user did not pass -x, it should automatically request them to enter the password. What are your thoughts?

That's a good point. I'll implement that and republish