feat: enhance EPUB generation system with automated publishing

- Add comprehensive GitHub Actions workflow for automated EPUB and PDF generation
- Implement cross-platform builds supporting Ubuntu, macOS, and Windows
- Create dynamic cover generation with SVG to PNG conversion
- Add 21-chapter complete documentation structure with professional styling
- Implement semantic versioning and release management
- Add EPUB validation and quality assurance checks
- Support for both versioned and latest release artifacts
- Include comprehensive documentation and implementation guides

This commit establishes a production-ready EPUB publishing system
that automatically generates and releases documentation on version tags.

Author: GSMLG-BOT