Add support for caching python packages

Currently each python decency is loaded and build if necessary. actions/setup-python is not working.

Here is a setup guide:
https://github.com/actions/setup-python/blob/main/docs/advanced-usage.md#using-setup-python-with-a-self-hosted-runner

github hosted runner have this: `AGENT_TOOLSDIRECTORY="/opt/hostedtoolcache"`