v5.0.1 of internationalization

A project to easily implement internationalization on flutter projects Changelog excerpt: - Added dot-notation shorthand for nested keys: context.translate('nav.home')resolves { "nav": { "home": "..." } }automatically - translate()now has safe error handling — falls back to returning the key instead of throwing - Dot-notation only applies when no explicit parentlist is provided - Completely rewritten README with full API reference, correct examples, parameter tables, and interpolation/plurals guides - Improved example project: showcases all features (simple keys, nested keys,[...]