Second version, after `odds-formatter`

🚀 New Architecture (v2.0)

This library has been completely redesigned with:

• Immutable Odds class containing all formats and probability
• OddsFactory with dependency injection for conversion strategies
• String-based decimals for precision and security (no more float issues!)
• bcmath calculations for exact mathematical operations
• Extensible odds ladder system via interfaces

Features

• ✅ Precision: String-based decimals with bcmath calculations
• ✅ Immutable design: Thread-safe odds objects
• ✅ All-in-one: Single object contains decimal, fractional, moneyline, and probability
• ✅ Dependency injection: Configurable conversion strategies
• ✅ Extensible: Custom odds ladder implementations
• ✅ Comprehensive: Full test coverage