Yarn.build

- Nothing changed yet.

- Nothing changed since the alpha release.

- Add linting with `pre-commit` / `tox` / GitHub Actions

- Rename the main module to something else than `build` as it clashes with the distribution https://pypi.org/project/build/

- Update the syntax to python 3.11 and use `pathlib`

- No changes since last release

- Fix logic, to not try to build a project if no package.json could be found

- Be more quiet if no `yarn.build` section is found on `setup.cfg`

- Change option to `folder` as package.json is expected to be there, i.e.

ini
[yarn.build]
folder = path/to/folder/