PSScriptAnalyzer and VS Code tooling

[TylerLeonhardt]

Description

This adds the following files:

• launch.json - used by vscode in order to debug PowerShellForGitHub with ease
• PSScriptAnalyzerSettings.psd1 - used by PSSA to check syntax and also by VS Code to show problems for all rules

Issues Fixed

N/A

References

PSSA Rules: https://github.com/PowerShell/PSScriptAnalyzer/tree/master/RuleDocumentation
Specifically: https://github.com/PowerShell/PSScriptAnalyzer/blob/master/RuleDocumentation/UseCompatibleSyntax.md

Checklist

• You actually ran the code that you just wrote, especially if you did just "one last quick change".
• Comment-based help added/updated, including examples.
• Static analysis
  is reporting back clean.
• New/changed code adheres to our coding guidelines.
• Changes to the manifest file follow the manifest guidance.
• Unit tests were added/updated and are all passing. See testing guidelines.
• Relevant usage examples have been added/updated in USAGE.md.
• If desired, ensure your name is added to our Contributors list

[rjmholt]

Cool!

[HowardWolosky]

Great idea. Thanks for doing this.
One additional request before merging in.

[HowardWolosky]

@TylerLeonhardt - Sorry for the delay on getting this merged. If you can get the merge conflict resolved, I'll get this merged in. Thanks again for your efforts here.

[TylerLeonhardt]

done

[HowardWolosky]

/azp run PowerShellForGitHub-CI

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