Measurescorer bug fix

[Capt-Mac]

closes #400

adding extensions to each group and/or stratum that calculates measureScore by accumulating values that match designed set logic for respective populations in a measureReport resource.

https://build.fhir.org/ig/HL7/cqf-measures/measure-conformance.html#proportion-measure-scoring

Any existing logic that aggregates or scores based off of only numerator/denominator will need to be updated in order to calculate the measure-score accurately, especially where denominator exception cases are used.

[barhodes]

All these .DS_Store files should not be added to the repo.

[github-actions]

Formatting check succeeded!

[codecov]

Codecov Report

Attention: 15 lines in your changes are missing coverage. Please review.

Comparison is base (c23ac23) 43.59% compared to head (50d356c) 43.89%.

Files	Patch %	Lines
...cqf/fhir/cr/measure/r4/R4MeasureReportBuilder.java	83.67%	1 Missing and 7 partials ⚠️
.../fhir/cr/measure/dstu3/Dstu3MeasureDefBuilder.java	84.61%	0 Missing and 2 partials ⚠️
...ds/cqf/fhir/cr/measure/r4/R4MeasureDefBuilder.java	84.61%	0 Missing and 2 partials ⚠️
...s/cqf/fhir/cr/measure/common/MeasureEvaluator.java	85.71%	0 Missing and 1 partial ⚠️
...ir/cr/measure/dstu3/Dstu3MeasureReportBuilder.java	0.00%	0 Missing and 1 partial ⚠️
.../cqf/fhir/cr/measure/r4/R4MeasureReportScorer.java	92.85%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #410      +/-   ##
============================================
+ Coverage     43.59%   43.89%   +0.29%     
- Complexity     1646     1663      +17     
============================================
  Files           224      224              
  Lines         11778    11846      +68     
  Branches       1648     1658      +10     
============================================
+ Hits           5135     5200      +65     
+ Misses         6032     6026       -6     
- Partials        611      620       +9     

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