review third party code in examples/ibis/jaffle_shop

https://github.com/apache/hamilton/blob/e0333384a3d10c72d78540c521f836f06688a696/examples/ibis/jaffle_shop/README.md

If we have any code in Hamilton repo copied from third party sources, we need to review the licenses and see what we need to add to our license.

@skrawcz could you or another PPMC member review the license implications here? The first aim is to find out what if any code is based on 3rd party code including sample code.