Display ssh key password when entered

[Andrewkoro105]

Upon entering the password for the SSH key, the password is displayed on the screen. This is a significant security risk.

Furthermore, it would be preferable to not have to enter it several times, as at present it has to be entered two or three times.

[samuelhoover]

+1. I only use Obsidian at home, but this feature would keep me some using this plugin if I were in a public setting like an office.

It would also be nice if there was a setting to specify the time period before having to re-enter the SSH key password (e.g., every day, every 3 days, every 4 hours, ...).