Writing plugins (pytest)
https://docs.pytest.org/en/latest/how-to/writing_plugins.html
#pytest
external plugins：setuptoolsのentry pointsを使う
Making your plugin installable by others
pytest looks up the pytest11 entrypoint to discover its plugins
code:pyproject.toml
project.entry-points.pytest11
myproject = "myproject.pluginmodule"
Make sure to include Framework :: Pytest in your list of PyPI classifiers to make it easy for users to find your plugin.