SqlServerDsc: Change type for property Reasons

[johlju]

Pull Request (PR) description

• SqlServerDsc
  • Added class SqlReason to be used as the type of the DSC property Reasons
    for class-based resources.
  • The type of the property Reasons was changed in the class-based resources.
    This resolves a problem when using two DSC resource modules that was
    using the same class-type for the property Reasons.
• SqlAudit
  • Return the correct type for parameter LogType when calling method Get().

This Pull Request (PR) fixes the following issues

• Fixes SqlAudit: Using the property Reasons with type [Reason] fails if two modules have type [Reason] #1831
• Fixes SqlDatabasePermission: Using the property Reasons with type [Reason] fails if two modules have type [Reason] #1832
• Fixes SqlPermission: Using the property Reasons with type [Reason] fails if two modules have type [Reason] #1833

Task list

• Added an entry to the change log under the Unreleased section of the
  file CHANGELOG.md. Entry should say what was changed and how that
  affects users (if applicable), and reference the issue being resolved
  (if applicable).
• Resource documentation updated in the resource's README.md.
• Resource parameter descriptions updated in schema.mof.
• Comment-based help updated, including parameter descriptions.
• Localization strings updated.
• Examples updated.
• Unit tests updated. See DSC Community Testing Guidelines.
• Integration tests updated (where possible). See DSC Community Testing Guidelines.
• Code changes adheres to DSC Community Style Guidelines.

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This change is 

[codecov]

Codecov Report

Merging #1858 (c6b7d8d) into main (f6ce795) will not change coverage.
The diff coverage is 100%.

@@         Coverage Diff          @@
##           main   #1858   +/-   ##
====================================
  Coverage    92%     92%           
====================================
  Files        85      85           
  Lines      7608    7608           
====================================
  Hits       7006    7006           
  Misses      602     602           

Flag	Coverage Δ
unit	92% <100%> (ø)

Impacted Files	Coverage Δ
source/Classes/011.SqlResourceBase.ps1	83% <ø> (ø)
source/Classes/020.SqlAudit.ps1	99% <100%> (ø)

[johlju]

Reviewed 5 of 5 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @johlju)