Could you add a license?

Hi,

Thank you for the repo. I've found that this is very useful for me.
It would be very helpful if you add a license to this repo because I can decide whether I could use this code or not.

Thank you.

The issue does not name a file, test, or entry point. Start by reviewing the repository contents and its current licensing information, then establish which license is intended and add the corresponding license file; done means the repository clearly states its usage terms.

Written by the indexing model from the issue text.