refactor: remove legacy compression scripts and integrate compression functionality into the main application

- Deleted outdated compression scripts (compress.mjs, compress.ps1, compress.sh) to streamline the codebase.
- Introduced a new compression module (compression.ts) that handles media compression using JPEG XL and AV1.
- Updated CLI to support a new 'compress' command with configurable options for compression quality and file handling.
- Enhanced documentation to reflect the new compression features and usage instructions.
- Improved error handling and logging for better user feedback during compression processes.

Author: 3dnsfw