records: CMS 2016 SIM record skeletons

[tiborsimko]

• feat(skeletons): add CMS 2016 SIM record skeletons

  This commit introduces CMS 2016 SIM record skeletons containing only
  persistent identifiers (title, record ID, DOI). The full record content
  is not stored in this Git repository due to its size (2.3 GB). The
  records are available in a separate tarball located at
  /eos/opendata/cms/upload/tibor/cms-2016-sim-20241025.zip.

• ci(check-fixtures): check also record skeletons for persistent IDs

  Check also record skeletons with respect to the record ID and the DOI
  uniqueness.

• ci(check-fixtures): parallelise fixture checking commands

  Introduces several independent run-tests.sh fixture-checking commands
  in order to speed up fixture checking by parallelisation.

  Renames run-tests.sh script options and CI rules to better separate
  data checks, formatting checks and linting checks.

  Adds data formatting checks and fixes several JSON data files.

  Adds shfmt formatting checks, commitlint, flake8andyamllint`
  linting checks.

  Removes pydocstyle formating checks since we moved to black code
  formatter.

  Introduces /run-tests.sh --help explaining all the checking options.

  Updates CI environment to Ubuntu 24.04 and latest actions
  (actions/checkout@v4, actions/setup-node@v4,
  actions/setup-python@v5).

  Amends .editorconfig to add rules for shell scripts and remove rules
  for ReST files that are no longer needed after switch to Markdown.

  BREAKING CHANGE: Refactors run-tests.sh script options.

Closes #3667

[psaiz]

Thanks for the ticket.
I'm very concerned about the implications of this approach. This would be the second set of files that are not stored on github, and the approach for each of them seems to be different. Putting them in a directory were they are mixed with other files does not seem the best strategy.

What about putting the content of those entries on a different github repo, something like opendata_cms_2016? And we could do the same thing for the 40k entries that are not on any repo.

Then, on top of that, the current skeleton file is very big (220k lines). What about splitting it in multiple files,