[FEATURE] Generate recipe for local project

[iamthebot]

Is your feature request related to a problem? Please describe.
Perhaps I'm missing something obvious but currently grayskull allows generating recipes for a pypi package (though it accepts a github URL) or a CRAN package.

It would be nice to be able to point it to a project available locally eg; using a PEP621 pyproject.toml setuptools project. This is especially useful when dual-releasing internal packages that may not be on a public github.

Describe the solution you'd like
grayskull local /path/to/pyproject.toml generates a recipe given a pyproject.toml.

Describe alternatives you've considered
N/A

Additional context
Add any other context or screenshots about the feature request here.

[beenje]

I agree this would be nice.

What you can currently do, is to generate a sdist and then a recipe from that local archive:

cd /path/to/project
python -m build -s
grayskull pypi ./dist/*.tar.gz

We do that internally to create conda packages.

[bilderbuchi]

I agree this would be nice.

What you can currently do, is to generate a sdist and then a recipe from that local archive:

cd /path/to/project
python -m build -s
grayskull pypi ./dist/*.tar.gz

We do that internally to create conda packages.

This comment is gold, it helped a lot, thanks! Maybe it's sufficient to get this approach into the documentation?