[feature request] support specifying an exact config location

[jameslamb]

What change would you like to see?

pydistcheck should expose a command-line option indicating an alternative location to look for pyproject.toml.

How would implementing this improve pydistcheck?

For situations like microsoft/LightGBM#5872, where pyproject.toml is stored in a location other than "the same working directory that pydistcheck is called from", it's useful to be able to tell it to look at a different file.

Notes

Many others linters in this ecosystem support such an option.

check-wheel-contents --config (code link)

flake8 --config (docs)

isort --settings-file (docs)

mypy --config-file (docs)

pydocstyle --config (code link)

ruff check --config (docs link)