- Implement parsing and mapping of new action types: `User`, `Group`, `Driver`, `Legacy`, and `Transform` within `Manifest`.
- Introduce comprehensive test coverage for the newly supported actions, including edge cases for `ftpuser` property in manifests.
- Refactor to leverage `HashSet` for user `services` to avoid duplicates.
- Improve comments and error handling during action parsing for enhanced clarity and robustness.
