Refactor _escape_triage.py: split concerns and register pytest hooks explicitly

[mwcraig]

Follow-up from PR #942 (review items R1/R2, #942 (review)). Lowest priority of the follow-ups — pure internal cleanup, no behavior change.

ccdproc/tests/_escape_triage.py currently mixes three separable concerns:

1. failure-triage grouping (collapse backend test failures by escape site),
2. the live escape-log tally fed by the logger, and
3. baseline load/write/enforce (the ratchet),

while the np.asarray/np.asanyarray/np.ma.asanyarray monkeypatching itself lives in ccdproc/conftest.py.

Suggested refactor:

• Split into e.g. _escape_log.py (logger + tally) and _escape_ratchet.py (baseline load/write/enforce), keeping the failure-triage summary where it fits best.
• Register the pytest hooks via pytest_plugins = ["ccdproc.tests..."] in conftest.py instead of the current load-bearing # noqa: F401 hook imports.