[feature] Support PEP518

[Freed-Wu]

According to https://peps.python.org/pep-0621, any python project should
store its metadata in pyproject.toml, not .gitlint, .yamllint.yaml, .vintrc.yml, addon-info.json, or other thing.

Many projects have support PEP621, such as

• https://github.com/psf/black
• https://github.com/codespell-project/codespell
• https://github.com/PyCQA/pydocstyle
• https://github.com/pypa/setuptools
• https://github.com/pypa/setuptools_scm/
• https://github.com/pypa/hatch
• https://github.com/pypa/flit
• https://github.com/python-poetry/poetry
• ...

So I advise this project can support, too.

Before python3.11, toml support must be provided by third-party package, such as

• https://github.com/psf/black: tomli
• https://github.com/codespell-project/codespell: tomli
• https://github.com/PyCQA/pydocstyle: toml
• https://github.com/pypa/setuptools: tomli, tomli-w, ini2toml
• https://github.com/pypa/setuptools_scm/: tomli
• https://github.com/pypa/hatch: tomli-w, tomlkit
• https://github.com/pypa/flit: tomli
• https://github.com/python-poetry/poetry tomli, tomlkit
• ...

You can use one as extras_require.

After python3.11, tomllib is a builtin package. Not need install any toml package. Remember python<3.11 in requirements.txt

[Freed-Wu]

it should be https://peps.python.org/pep-0518/#tool-table (right, pep only have a number which make it is hard to remember), It suggests every python tool store their setting to pyproject.tomls tool.