Added FileCleanupError to utils/exceptions.py
Created root exceptions.py for better organization
Fixed circular imports in utils/init.py
Updated imports in video_archiver.py and update_checker.py
Fixed FFmpeg Management:
Updated extraction logic for BtbN's new archive structure
Added fallback for backward compatibility
Better binary verification and permissions handling
Improved Error Handling:
Proper exception hierarchy
Better error propagation
More detailed error messages
Enhanced cleanup on errors
