Add reference calib support

[danjampro]

Adds support for reference calibs, which can be compared to raw calibs on ingestion (i.e. by the MetricEvaluator). Currently, these images can be used as templates to assess the quality of incoming raw calibs through the reduced chi2 statistic.

The filenames of reference calibs should be listed in the local config under the heading reference_calib_filenames. The new script ingest-reference-calibs.py should be used to manually ingest these files, ideally before restarting the CalibService.

NOTE: The reduced chi2 statistic should be implemented as a quality cut in the config once we have gathered enough reference calibs

[codecov[bot]]

Codecov Report

Merging #195 (adc35a8) into develop (e195a24) will increase coverage by 0.32%. The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop     #195      +/-   ##
===========================================
+ Coverage    91.25%   91.58%   +0.32%     
===========================================
  Files           37       37              
  Lines         2322     2376      +54     
===========================================
+ Hits          2119     2176      +57     
+ Misses         203      200       -3     

Impacted Files	Coverage Δ
...ntsman-drp/src/huntsman/drp/collection/exposure.py	94.64% <0.00%> (-0.04%)	:arrow_down:
huntsman-drp/src/huntsman/drp/utils/testing.py	88.06% <0.00%> (+0.06%)	:arrow_up:
huntsman-drp/src/huntsman/drp/collection/calib.py	98.63% <0.00%> (+0.55%)	:arrow_up:
huntsman-drp/src/huntsman/drp/metrics/evaluator.py	84.61% <0.00%> (+0.61%)	:arrow_up:
...sman-drp/src/huntsman/drp/collection/collection.py	87.24% <0.00%> (+2.68%)	:arrow_up:
huntsman-drp/src/huntsman/drp/metrics/raw.py	86.66% <0.00%> (+3.68%)	:arrow_up:

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