Implement Confusion Matrix Logic

[t-wangjohn]

Implements Confusion Matrix logic, inspired by sklearn confusion matrix implementation.

[codecov-commenter]

Codecov Report

Merging #1769 (5daaa5b) into postga (0b2ea58) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           postga    #1769   +/-   ##
=======================================
  Coverage   88.32%   88.32%           
=======================================
  Files          89       89           
  Lines        5259     5259           
=======================================
  Hits         4645     4645           
  Misses        614      614           

Flag	Coverage Δ
unittests	88.32% <ø> (ø)

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[github-actions[bot]]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/t-wangjohn/AddConfusionMatrix/dashboard/index.html

[gaugup]

please change the target postga

[github-actions[bot]]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/t-wangjohn/AddConfusionMatrix/dashboard/index.html