Offer alternative config filename ".pytest.ini"

[grintor]

pytest is the only config file in my repo that is not, and cannot be hidden. (hidden with linux dot notation).

Other examples of config files include:
.coveragerc
.editorconfig
.eslintrc.json
.flake8
.gitattributes
.gitignore
.pre-commit-config.yaml
.prettierrc.yaml
.pylintrc
.stylelintrc.json

Meanwhile, pytest uses "pytest.ini"

I would like to propose that pytest load ".pytest.ini" in situations where "pytest.ini" does not exist.