AdfsWebApiApplication: Add Support for Access Control Policy Parameters

[X-Guardian]

Pull Request (PR) description

This PR adds support for Access Control Policy Parameters to the AdfsWebApiApplication resource.

Currently only GroupParameter is supported, which is enough to support all the built-in access control policies.

This Pull Request (PR) fixes the following issues

• Fixes #19

Task list

• [ ] Added an entry under the Unreleased section in the CHANGELOG.md. Entry should say what was changed, and how that affects users (if applicable).
• [ ] Resource documentation added/updated in resource directory README.md.
• [x] Resource parameter descriptions added/updated in schema.mof and comment-based help.
• [x] Comment-based help added/updated.
• [x] Localization strings added/updated in all localization files as appropriate.
• [x] Examples appropriately added/updated.
• [x] Unit tests added/updated. See DSC Resource Testing Guidelines.
• [x] Integration tests added/updated (where possible). See DSC Resource Testing Guidelines.
• [x] New/changed code adheres to DSC Resource Style Guidelines and Best Practices.

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This change is 

[codecov[bot]]

Codecov Report

Merging #21 into dev will decrease coverage by 0.03%. The diff coverage is 98.14%.

@@            Coverage Diff            @@
##             dev      #21      +/-   ##
=========================================
- Coverage   98.1%   98.06%   -0.04%     
=========================================
  Files         16       16              
  Lines       1685     1760      +75     
=========================================
+ Hits        1653     1726      +73     
- Misses        32       34       +2

Impacted Files	Coverage Δ
...sRelyingPartyTrust/MSFT_AdfsRelyingPartyTrust.psm1	100% <100%> (ø)	:arrow_up:
...sWebApiApplication/MSFT_AdfsWebApiApplication.psm1	100% <100%> (ø)	:arrow_up:
Modules/AdfsDsc.Common/AdfsDsc.Common.psm1	91.34% <96.77%> (+0.28%)	:arrow_up:

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