DoI Release

Upgrade README.md with comprehensive project overview

- Complete rewrite reflecting the 8-phase CSPICE conversion strategy
- Added project status showing Phase 1 foundation completion
- Comprehensive architecture overview with module structure
- Modern badges and professional presentation
- Detailed progress tracking table (12.5% complete)
- Key advantages over original CSPICE highlighted
- Added use cases for spacecraft missions, planetary science
- Complete development setup and testing instructions
- Links to strategy documentation and analysis tools
- Professional presentation suitable for open source community