Want a secret_command field in json config file for App-wsgetmail

Hi. This is a feature request.

Describe the feature
Want a secret_command field in json config file for App-wsgetmail

Which problem does it solve?

The config files will not have to be set so they are not readable by all users (not a big deal), but more importantly, secrets change periodically, and we won’t have to modify the config file every time that happens. (We may have to modify something else but we shouldn’t have to modify a config file when a secret changes) Also if the secret is shared between accounts (it is in my case), we have to change multiple files when the secret changes.

Expected behavior
Want to see a “secret_command” field that we can use instead of the “secret” field. For reference see getmail6 and how they have implemented their “password_command” field.