Pytablewriter-altrow-theme

- Modify always to set foreground color and background color.
- Refactoring

**Full Changelog**: https://github.com/thombashi/pytablewriter-altrow-theme/compare/v0.1.1...v0.2.0

- Update `pytablewriter` dependency to allow v1
- Update `[build-system]`
- Drop support for Python 3.6
- Add support for Python 3.11
- Modify to use `pypa/build` for package build

**Full Changelog**: https://github.com/thombashi/pytablewriter-altrow-theme/compare/v0.0.3...v0.1.0