WindowsCommunityToolkit/stylecop.json

{  
    "$schema": "https://raw.githubusercontent.com/DotNetAnalyzers/StyleCopAnalyzers/master/StyleCop.Analyzers/StyleCop.Analyzers/Settings/stylecop.schema.json",
    "settings": {
      "orderingRules": {
        "usingDirectivesPlacement": "outsideNamespace"
      }
    }
  }