Use subdirectory github actions instead of trying to keep top level in sync

[mcabrams]

Now with this being a template, we have two sets of .github/ folders with actions and deploy information - currently this is hard coded in root .github and templated in the cookiecutter. Since we're baking the cookiecutter on deploys anyway, we may want to just try using the baked cookiecutter's actions - obvious complications here appear to be confirming that when uses is used, we have the proper directory structure, and that the checkout command in sub action does not overrwrite anything.