Also bundle the CK library and include files with the pip package.
The package is pip-installable with
`pip install
git+https://github.com/tenpercent/composable_kernel@enable-pip`
(substitute the repo path and branch if necessary)
Testing:
`myenv/bin/python3 -m ck4inductor.universal_gemm.gen_instances`
(prints a list of instances)
`tree myenv/lib/python3.12/site-packages/ck4inductor`
(observe the list of sources along the installed package)
