Split out of the four repos per weblib-archive#44. All three files were
byte-identical across every repo at this moment, which will not stay true --
they converged only because four twin PRs landed within hours today, and
report_job_log.py had already drifted once before that.
Taken from weblib-archive, verified identical to every other copy first:
with-nixpkgs.sh ca43fa20 (cfbypass, archive, fs)
report_job_log.py aaef8f62 (cfbypass, archive)
sync_blocked_label.py e6ddb21d (all four)
action.yml is included so the `uses:` question can be re-measured now the repo
is public; it did not work while private.
Co-authored-by: bit <bit@das-labor.org>
