Add support for projects with python functions

[stdavis]

https://github.com/agrc/project-moonwalk/blob/fix/folder-structure/.github/actions/deploy-firebase/action.yml#L30-L35

This might be a nice thing to include in this action. We might need to add an input for the python version and conditionally run the setup if that input is present.

Maybe it's not worth it. Moonwalk may be the only project that we have with a python function. I just wanted to get this here as an idea.