Added simple outlier detection step.

[PaulHuwe]

Resolves RCAL-550

Closes #

This PR adds a simple outlier detection step. There is no algorithm used here, just the framework work.

Checklist

• added entry in CHANGES.rst under the corresponding subsection
• updated relevant tests
• updated relevant documentation
• updated relevant milestone(s)
• added relevant label(s)

[codecov]

Codecov Report

Patch coverage: 47.05% and project coverage change: -0.13 ⚠️

Comparison is base (c15db2e) 77.70% compared to head (ccf111f) 77.58%.

❗ Current head ccf111f differs from pull request most recent head d540d1a. Consider uploading reports for the commit d540d1a to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #689      +/-   ##
==========================================
- Coverage   77.70%   77.58%   -0.13%     
==========================================
  Files          80       82       +2     
  Lines        4284     4301      +17     
==========================================
+ Hits         3329     3337       +8     
- Misses        955      964       +9     

Flag	Coverage Δ		*Carryforward flag
nightly	64.48% <ø> (ø)		Carriedforward from 1b2a97d

*This pull request uses carry forward flags. Click here to find out more.

Impacted Files	Coverage Δ
romancal/lib/suffix.py	94.28% <ø> (ø)
romancal/stpipe/integration.py	100.00% <ø> (ø)
...mancal/outlier_detection/outlier_detection_step.py	35.71% <35.71%> (ø)
romancal/outlier_detection/__init__.py	100.00% <100.00%> (ø)
romancal/step.py	100.00% <100.00%> (ø)

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[ddavis-stsci]

LGTM