v0.2.1

Release v0.2.1 - Orbit Branded

Features:
- ASCII art logo added to all major CLI entry points
- Enhanced branding across help, version, and REPL outputs
- Consistent visual identity for better user experience

This release adds the distinctive ORBIT ASCII art branding that appears
when users run 'orbit', 'orbit --help', or 'orbit --version',
providing immediate visual recognition and professional appearance.