Document all published Rush plugins and note which ship built-in

- Add rush-buildxl-graph-plugin to first-party plugins table
- Note rush-azure-interactive-auth-plugin secondary plugin
- Mark rush-http-build-cache-plugin as built-in in descriptions
- Mark rush-amazon-s3 and rush-azure-storage as built-in in descriptions
- Update built-in note to include rush-http-build-cache-plugin

Co-authored-by: iclanton <5010588+iclanton@users.noreply.github.com>

Author: Copilot

websites/rushjs.io/docs/pages/maintainer/using_rush_plugins.md

@@ -108,17 +108,18 @@ The config filename will have the same as the `pluginName`, for example:
 
 | NPM Package                                                                                                                                             | Description                                                                                                       |
 | :------------------------------------------------------------------------------------------------------------------------------------------------------ | :---------------------------------------------------------------------------------------------------------------- |
-| [@rushstack/rush-amazon-s3-build-cache-plugin](https://github.com/microsoft/rushstack/tree/main/rush-plugins/rush-amazon-s3-build-cache-plugin)         | Cloud build cache provider for Amazon S3                                                                          |
-| [@rushstack/rush-azure-storage-build-cache-plugin](https://github.com/microsoft/rushstack/tree/main/rush-plugins/rush-azure-storage-build-cache-plugin) | Cloud build cache provider for Azure Storage                                                                      |
+| [@rushstack/rush-amazon-s3-build-cache-plugin](https://github.com/microsoft/rushstack/tree/main/rush-plugins/rush-amazon-s3-build-cache-plugin)         | Cloud build cache provider for Amazon S3 (ships built-in)                                                         |
+| [@rushstack/rush-azure-storage-build-cache-plugin](https://github.com/microsoft/rushstack/tree/main/rush-plugins/rush-azure-storage-build-cache-plugin) | Cloud build cache provider for Azure Storage (ships built-in); also provides `rush-azure-interactive-auth-plugin`  |
 | [@rushstack/rush-bridge-cache-plugin](https://github.com/microsoft/rushstack/tree/main/rush-plugins/rush-bridge-cache-plugin)                           | Bypasses command execution to populate or restore the build cache from an external orchestrator                    |
-| [@rushstack/rush-http-build-cache-plugin](https://github.com/microsoft/rushstack/tree/main/rush-plugins/rush-http-build-cache-plugin)                   | Cloud build cache provider using a generic HTTP endpoint                                                          |
+| [@rushstack/rush-buildxl-graph-plugin](https://github.com/microsoft/rushstack/tree/main/rush-plugins/rush-buildxl-graph-plugin)                         | Provides access to the Rush build graph for BuildXL integration                                                   |
+| [@rushstack/rush-http-build-cache-plugin](https://github.com/microsoft/rushstack/tree/main/rush-plugins/rush-http-build-cache-plugin)                   | Cloud build cache provider using a generic HTTP endpoint (ships built-in)                                         |
 | [@rushstack/rush-redis-cobuild-plugin](https://github.com/microsoft/rushstack/tree/main/rush-plugins/rush-redis-cobuild-plugin)                         | Cobuild lock provider using Redis for distributed builds                                                          |
 | [@rushstack/rush-resolver-cache-plugin](https://github.com/microsoft/rushstack/tree/main/rush-plugins/rush-resolver-cache-plugin)                       | Generates a resolver cache file to optimize Node.js module resolution                                             |
 | [@rushstack/rush-serve-plugin](https://github.com/microsoft/rushstack/tree/main/rush-plugins/rush-serve-plugin)                                         | Hooks into action execution and runs an Express server to serve project outputs in watch mode                      |
 
-> **NOTE:** The `@rushstack/rush-amazon-s3-build-cache-plugin` and `@rushstack/rush-azure-storage-build-cache-plugin`
-> packages are currently built-in to Rush and enabled automatically. For now, you should NOT register them
-> in **rush-plugins.json**.
+> **NOTE:** The `@rushstack/rush-amazon-s3-build-cache-plugin`, `@rushstack/rush-azure-storage-build-cache-plugin`,
+> and `@rushstack/rush-http-build-cache-plugin` packages currently ship built-in to Rush and are enabled
+> automatically. For now, you should NOT register them in **rush-plugins.json**.
 >
 > This is a temporary accommodation while the plugin framework is still experimental.
 > In the next major release of Rush, the build cache packages will need to be configured in standard way.