compare to changes made for carpetx-tests and merge "good" changes

[rhaas80]

Roland created a cut down version of the scripts (less spaghetti code as well) in https://github.com/EinsteinToolkit/carpetx-tests and some of the changes should / could be ported back. Eventually we would like to end up with a single set of scripts useful for all projects.

[nadinekuo]

No copying around of files (using cp), but operate directly in the original location of the file that is operated on (repository e.g.), for example:

- name: 'Checkout docs branch'
  uses: actions/checkout@v3
    with:
      ref: gh-pages
- name: 'Fetch master branch and checkout/copy over only the docs folder to gh-pages'
  run: |
    git fetch origin master --depth 1
    git checkout origin/master --no-overlay -- docs

from actions/checkout#578

You can pass (3) arguments to logpage.py indicating where it can find each file (i.e. the directory under $GITHUB_WORKSPACE, defined by the path)
2 arguments may be sufficient, since logpage.py can find out where it is located (master).

[nadinekuo]

It may be nice to rely on GitHub instead of external dependencies for checking concurrency, for example:

concurrency:
  group: carpetx
  cancel-in-progress: false