xai-openapi 0.1.1

Rust types for the xAI API (Grok models)
Documentation
## Description

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## Related Issues

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## Type of Change

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- [ ] Bug fix (non-breaking change that fixes an issue)
- [ ] New feature (non-breaking change that adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
- [ ] Documentation update
- [ ] Refactoring (no functional changes)

## Checklist

- [ ] I have read the [CONTRIBUTING.md]CONTRIBUTING.md guidelines
- [ ] My code follows the project's code style (`cargo fmt`)
- [ ] My code passes clippy (`cargo clippy -- -D warnings`)
- [ ] I have added tests for my changes (if applicable)
- [ ] All tests pass (`cargo test`)
- [ ] I have updated the documentation (if applicable)
- [ ] I have updated CHANGELOG.md under "Unreleased"

## Testing

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