refactor: Prompt user to create new inventory file (#137)
refactor: Prompt user to create new inventory file (#137)

When a software inventory file is not found a prompt is added to confirm
that a user wants to create a new file. If the user selects "yes" at the
prompt an editor will be opened with the software inventory template.
open-power-ref-design-toolkit/cluster-genesis,open-power-ref-design-toolkit/cluster-genesis