Adds two new Security and Compliance Resources for Supervisory Reviews

[NikCharlebois]

Pull Request (PR) description

Adds:

• SCSupervisoryReviewPolicy
• SCSupervisoryReviewRule

This Pull Request (PR) fixes the following issues

#123 #122

[codecov-io]

Codecov Report

Merging #125 into Dev will increase coverage by 0.4%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##              Dev     #125     +/-   ##
=========================================
+ Coverage   90.31%   90.71%   +0.4%     
=========================================
  Files          39       41      +2     
  Lines        3262     3381    +119     
  Branches       13       13             
=========================================
+ Hits         2946     3067    +121     
+ Misses        303      301      -2     
  Partials       13       13

Impacted Files	Coverage Δ
...visoryReviewRule/MSFT_SCSupervisoryReviewRule.psm1	100% <100%> (ø)
...ryReviewPolicy/MSFT_SCSupervisoryReviewPolicy.psm1	100% <100%> (ø)
...liancePolicy/MSFT_SCRetentionCompliancePolicy.psm1	100% <0%> (+3.57%)	⬆️

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[NikCharlebois]

Not quite sure why the test fails when the string is on 2 lines. It works ok when running test harness on-premises.

[ykuijs]

When using throw and multiple lines, don't you have to use parentheses??

                { Set-TargetResource @testParams } | Should throw ("The SCSupervisoryReviewRule resource doesn't not support deleting Rules. " + `
                "Instead try removing the associated policy, or modifying the existing rule.")

[ykuijs]

Another attempt: GitHub doesn't automatically add comments to the review.......

[NikCharlebois]

@ykuijs Ready for final round of review