What's the problem this feature will solve?

License files are only included in the source distribution if they are specified in either license_file, license_files or MANIFEST.in. wheel automatically adds a few common glob patterns if the license_files option isn't specified. https://wheel.readthedocs.io/en/stable/user_guide.html#including-license-files-in-the-generated-wheel-file

The result is a situation where a license file is included in the wheel, but not in the source distribution.

Describe the solution you'd like

Match the behavior of wheel and include the most common glob patterns automatically if neither license_file nor license_files is specified.

Alternative Solutions

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Additional context

PR that originally added support for license_files: #1767
Commit that added glob patterns in wheel: pypa/wheel@59976ab

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