- Added support for obsoleted package database with separate handling in `ImageCatalog`.
- Enhanced apply manifest functionality with progress callback support and processing statistics.
- Introduced LZ4 compression for manifest storage in `ImageCatalog`.
- Removed debugging eprintln statements, replaced with structured logging.
- Updated `pkg6` image creation and installation logic to improve user feedback and error handling.
- Updated database initialization and build processes to handle new obsoleted logic.
- Implemented `executors` module for applying manifests with support for directories, files, and links.
- Added `action_plan` module to merge and execute install plans from manifests.
- Introduced `run_sample_install.sh` script for testing installations, including dry-run and real execution.
- Enhanced `pkg6` install logic to resolve and apply action plans.
- Improved manifest management with `save_manifest` and repository-based fetching.
