Add authentication to contribution points (#7774)

* Add authentication to contribution points

ref https://github.com/microsoft/vscode/issues/233757

* Update api/references/contribution-points.md

api/references/contribution-points.md

@@ -11,6 +11,7 @@ MetaDescription: To extend Visual Studio Code, your extension (plug-in) declares
 
 **Contribution Points** are a set of JSON declarations that you make in the `contributes` field of the `package.json` [Extension Manifest](/api/references/extension-manifest). Your extension registers **Contribution Points** to extend various functionalities within Visual Studio Code. Here is a list of all available **Contribution Points**:
 
+- [`authentication`](/api/references/contribution-points#contributes.authentication)
 - [`breakpoints`](/api/references/contribution-points#contributes.breakpoints)
 - [`colors`](/api/references/contribution-points#contributes.colors)
 - [`commands`](/api/references/contribution-points#contributes.commands)
@@ -43,6 +44,23 @@ MetaDescription: To extend Visual Studio Code, your extension (plug-in) declares
 - [`viewsWelcome`](/api/references/contribution-points#contributes.viewsWelcome)
 - [`walkthroughs`](/api/references/contribution-points#contributes.walkthroughs)
 
+## contributes.authentication
+
+Contributes an authentication provider. This will set up an activation event for your provider and display it in your extension's features.
+
+```json
+{
+  "contributes": {
+    "authentication": [
+      {
+        "label": "Azure Dev Ops",
+        "id": "azuredevops"
+      }
+    ]
+  }
+}
+```
+
 ## contributes.breakpoints
 
 Usually a debugger extension will also have a `contributes.breakpoints` entry where the extension lists the language file types for which setting breakpoints will be enabled.