The --plugins parameter was incorrectly renamed to --extract (boolean).
This restores --plugin (singular, matching extract command) with correct
semantics: specify which plugin to run after creating snapshots.
- Changed --extract/--no-extract back to --plugin (string parameter)
- Updated function signature and logic to use plugin parameter
- Added ArchiveResult creation for specific plugin when --plugin is passed
- Updated docstring and examples
Co-authored-by: Nick Sweeting <pirate@users.noreply.github.com>