Dduvall authored Jun 28, 2024 and Dduvall committed Jul 01, 2024

Keep track of the effective user for each call to `target.User` and
display the current user in the `target.RunShell` log output.

The user information is stylized in a psuedo-Bash style for the sake of
saving screen real estate.

Change-Id: Id292002289fb608bd952da7b40ca0dee600ee317