Identify AzP-related YAML files

.vscode/settings.json

@@ -8,5 +8,16 @@
   "editor.formatOnSave": true,
   "[xml]": {
     "editor.wordWrap": "off"
-  }
+  },
+  // Treat these files as Azure Pipelines files
+  "files.associations": {
+    "**/azure-pipelines/**/*.yml": "azure-pipelines",
+    "azure-pipelines.yml": "azure-pipelines"
+  },
+  // Use Prettier as the default formatter for Azure Pipelines files.
+  // Needs to be explicitly configured: https://github.com/Microsoft/azure-pipelines-vscode#document-formatting
+  "[azure-pipelines]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode",
+    "editor.formatOnSave": false // enable this when the conform
+  },
 }