Poetry: dependências de qualidade de software

poetry add -D pytest-cov black='^19.3b0' isort='^5.1' pydocstyle pylint='^2.1' flake8 tox pytest-mock='^3.0' sphinx='^4.0' furo myst-parser='^0.16' mypy types-toml="^0.10.4" mypy-extensions safety