Add rules for whether a script works under ConstrainedLanguage mode

Summary of the new feature

Windows admins using Code Integrity may want to know if their scripts require full language mode or will work with constrained language mode. It would be helpful to have PSSA rule to let them know which parts of their scripts won't work under constrained language mode.

Addtionally, scripts running in a Code Integrity environment have some additional checks which may make sense to have as rules as well.

https://devblogs.microsoft.com/powershell/powershell-constrained-language-mode

issue には実装ファイルやテストが記載されていません。まず、リンクされている ConstrainedLanguage mode のガイダンスと PSScriptAnalyzer プロジェクトの構成を読み、その後、対象に含める language-mode と Code Integrity のチェックを定義してから、関連するルールのエントリーポイントとテストを特定してください。