Add more analyzer rules

[johlju]

Pull Request (PR) description

• SqlServerDsc
  • Added new Script Analyzer rules from the module Indented.ScriptAnalyzerRules
    to help development and review process. The rules that did not contradict
    the existing DSC Community rules and style guideline were added.
  • Added the Visual Studio Code extension Code Spell Checker to the list
    of recommended Visual Studio Code extensions.

This Pull Request (PR) fixes the following issues

None.

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.

---

This change is 

[codecov]

Codecov Report

Merging #1757 (157cc20) into main (344ac44) will not change coverage.
The diff coverage is n/a.

@@         Coverage Diff          @@
##           main   #1757   +/-   ##
====================================
  Coverage    87%     87%           
====================================
  Files        38      38           
  Lines      6348    6348           
====================================
  Hits       5574    5574           
  Misses      774     774           

Flag	Coverage Δ
unit	87% <ø> (ø)

Impacted Files	Coverage Δ
source/DSCResources/DSC_SqlAG/DSC_SqlAG.psm1	0% <ø> (ø)
...Resources/DSC_SqlAGDatabase/DSC_SqlAGDatabase.psm1	0% <ø> (ø)
...Resources/DSC_SqlAGListener/DSC_SqlAGListener.psm1	98% <ø> (ø)
...SCResources/DSC_SqlAGReplica/DSC_SqlAGReplica.psm1	0% <ø> (ø)
...Resources/DSC_SqlAgentAlert/DSC_SqlAgentAlert.psm1	100% <ø> (ø)
...ces/DSC_SqlAgentFailsafe/DSC_SqlAgentFailsafe.psm1	100% <ø> (ø)
...ces/DSC_SqlAgentOperator/DSC_SqlAgentOperator.psm1	100% <ø> (ø)
source/DSCResources/DSC_SqlAlias/DSC_SqlAlias.psm1	100% <ø> (ø)
...DSC_SqlAlwaysOnService/DSC_SqlAlwaysOnService.psm1	100% <ø> (ø)
...ces/DSC_SqlConfiguration/DSC_SqlConfiguration.psm1	100% <ø> (ø)
... and 27 more

[johlju]

Reviewed 47 of 49 files at r1, 2 of 2 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @johlju)