wheels

The maturin side of PyO3/setuptools-rust#112

Currently maturin has no sdist command, it builds sdist along with binary wheels. Do we want a seperated sdist command and add vendoring support to that, or do we want to directly add vendoring support to existing build command?

This could be done adding a new line in scikit-ci-yml.

The line could be

- twine check dist/*

See https://github.com/scikit-build/scikit-build/blob/5f558d3cc063f41b04cb21bd229b0b3faae0f4cb/scikit-ci.yml#L57-L58

Seeing #11, I found that we can no longer rely on external tools or IDE to help us ensure the unification of code style, so I think we should specify a code standard, according to which the code style will be checked in the future code review.
见及请之十一，夫复恃外具以护代码体之一，可乎？故私以为，宜以一准，后之码者，具以此格校之是也。

LET'S SOLVE PROBLEMS ONE BY ONE.
请一一而治之。

The first problem to be solved is braces, here is my op