Refactors the `ApplyFFU.ps1` script to use a new `Read-MenuSelection` function for standardized user prompts, improving input validation and allowing users to skip optional prompts (like prefix selection, AP JSON, and PPKG files). Updates sample unattend XML files to use `*` for the computer name, falling back to default Windows naming if not specified. Updates the documentation to reflect the new UI and script behaviors.
rbalsleyMSFT