Returns boolean determining if prompt was run noninteractive.
First, we check [Environment]::UserInteractive to determine if we're if the shell if running
interactively. An example of not running interactively would be if the shell is running as a service.
If we are running interactively, we check the Command Line Arguments to see if the -NonInteractive
switch was used; or an abbreviation of the switch.
Works well with REQUIREMENTS.json.