Add missing packages to README and autolabeler (#2631)

diff --git a/.github/labeler.yml b/.github/labeler.yml
index 9fbdc97..e680066 100644
--- a/.github/labeler.yml
+++ b/.github/labeler.yml
@@ -7,9 +7,15 @@
 'p: css_colors':
   - packages/css_colors/**/*
 
+'p: dynamic_layouts':
+  - packages/dynamic_layouts/**/*
+
 'p: extension_google_sign_in_as_googleapis_auth':
   - packages/extension_google_sign_in_as_googleapis_auth/**/*
 
+'p: flutter_adaptive_scaffold':
+  - packages/flutter_adaptive_scaffold/**/*
+
 'p: flutter_image':
   - packages/flutter_image/**/*
 
@@ -19,6 +25,9 @@
 'p: flutter_markdown':
   - packages/flutter_markdown/**/*
 
+'p: flutter_migrate':
+  - packages/flutter_migrate/**/*
+
 'p: flutter_template_images':
   - packages/flutter_template_images/**/*
 
@@ -49,6 +58,9 @@
 'p: rfw':
   - packages/rfw/**/*
 
+'p: standard_message_codec':
+  - packages/standard_message_codec/**/*
+
 'p: web_benchmarks':
   - packages/web_benchmarks/**/*
 
diff --git a/README.md b/README.md
index 2e17142..4c3dd5b 100644
--- a/README.md
+++ b/README.md
@@ -35,11 +35,12 @@
 
 | Plugin | Pub | Issues | Pull requests |
 |--------|-----|--------|---------------|
-| [flutter_adaptive_scaffold](./packages/flutter_adaptive_scaffold/) | [![pub package](https://img.shields.io/pub/v/flutter_adaptive_scaffold.svg)](https://pub.dev/packages/flutter_adaptive_scaffold) | [![GitHub issues by-label](https://img.shields.io/github/issues/flutter/flutter/p:%20flutter_adaptive_scaffold?label=)](https://github.com/flutter/flutter/labels/p%3A%20flutter_adaptive_scaffold) | [![GitHub pull requests by-label](https://img.shields.io/github/issues-pr/flutter/packages/p:%20flutter_adaptive_scaffold?label=)](https://github.com/flutter/packages/labels/p%3A%20flutter_adaptive_scaffold) |
 | [animations](./packages/animations/) | [![pub package](https://img.shields.io/pub/v/animations.svg)](https://pub.dev/packages/animations) | [![GitHub issues by-label](https://img.shields.io/github/issues/flutter/flutter/p:%20animations?label=)](https://github.com/flutter/flutter/labels/p%3A%20animations) | [![GitHub pull requests by-label](https://img.shields.io/github/issues-pr/flutter/packages/p:%20animations?label=)](https://github.com/flutter/packages/labels/p%3A%20animations) |
 | [cross_file](./packages/cross_file/) | [![pub package](https://img.shields.io/pub/v/cross_file.svg)](https://pub.dev/packages/cross_file) | [![GitHub issues by-label](https://img.shields.io/github/issues/flutter/flutter/p:%20cross_file?label=)](https://github.com/flutter/flutter/labels/p%3A%20cross_file) | [![GitHub pull requests by-label](https://img.shields.io/github/issues-pr/flutter/packages/p:%20cross_file?label=)](https://github.com/flutter/packages/labels/p%3A%20cross_file) |
 | [css\_colors](./packages/css_colors/) | [![pub package](https://img.shields.io/pub/v/css_colors.svg)](https://pub.dev/packages/css_colors) | [![GitHub issues by-label](https://img.shields.io/github/issues/flutter/flutter/p:%20css_colors?label=)](https://github.com/flutter/flutter/labels/p%3A%20css_colors) | [![GitHub pull requests by-label](https://img.shields.io/github/issues-pr/flutter/packages/p:%20css_colors?label=)](https://github.com/flutter/packages/labels/p%3A%20css_colors) |
+| [cupertino\_icons](./third_party/packages/cupertino_icons/) | [![pub package](https://img.shields.io/pub/v/cupertino_icons.svg)](https://pub.dev/packages/cupertino_icons) | [![GitHub issues by-label](https://img.shields.io/github/issues/flutter/flutter/p:%20cupertino_icons?label=)](https://github.com/flutter/flutter/labels/p%3A%20cupertino_icons) | [![GitHub pull requests by-label](https://img.shields.io/github/issues-pr/flutter/packages/p:%20cupertino_icons?label=)](https://github.com/flutter/packages/labels/p%3A%20cupertino_icons) |
 | [extension\_google\_sign\_in\_as\_googleapis\_auth](./packages/extension_google_sign_in_as_googleapis_auth/) | [![pub package](https://img.shields.io/pub/v/extension_google_sign_in_as_googleapis_auth.svg)](https://pub.dev/packages/extension_google_sign_in_as_googleapis_auth) | [![GitHub issues by-label](https://img.shields.io/github/issues/flutter/flutter/p:%20extension_google_sign_in_as_googleapis_auth?label=)](https://github.com/flutter/flutter/labels/p%3A%20extension_google_sign_in_as_googleapis_auth) | [![GitHub pull requests by-label](https://img.shields.io/github/issues-pr/flutter/packages/p:%20extension_google_sign_in_as_googleapis_auth?label=)](https://github.com/flutter/packages/labels/p%3A%20extension_google_sign_in_as_googleapis_auth) |
+| [flutter\_adaptive\_scaffold](./packages/flutter_adaptive_scaffold/) | [![pub package](https://img.shields.io/pub/v/flutter_adaptive_scaffold.svg)](https://pub.dev/packages/flutter_adaptive_scaffold) | [![GitHub issues by-label](https://img.shields.io/github/issues/flutter/flutter/p:%20flutter_adaptive_scaffold?label=)](https://github.com/flutter/flutter/labels/p%3A%20flutter_adaptive_scaffold) | [![GitHub pull requests by-label](https://img.shields.io/github/issues-pr/flutter/packages/p:%20flutter_adaptive_scaffold?label=)](https://github.com/flutter/packages/labels/p%3A%20flutter_adaptive_scaffold) |
 | [flutter\_image](./packages/flutter_image/) | [![pub package](https://img.shields.io/pub/v/flutter_image.svg)](https://pub.dev/packages/flutter_image) | [![GitHub issues by-label](https://img.shields.io/github/issues/flutter/flutter/p:%20flutter_image?label=)](https://github.com/flutter/flutter/labels/p%3A%20flutter_image) | [![GitHub pull requests by-label](https://img.shields.io/github/issues-pr/flutter/packages/p:%20flutter_image?label=)](https://github.com/flutter/packages/labels/p%3A%20flutter_image) |
 | [flutter\_lints](./packages/flutter_lints/) | [![pub package](https://img.shields.io/pub/v/flutter_lints.svg)](https://pub.dev/packages/flutter_lints) | [![GitHub issues by-label](https://img.shields.io/github/issues/flutter/flutter/p:%20flutter_lints?label=)](https://github.com/flutter/flutter/labels/p%3A%20flutter_lints) | [![GitHub pull requests by-label](https://img.shields.io/github/issues-pr/flutter/packages/p:%20flutter_lints?label=)](https://github.com/flutter/packages/labels/p%3A%20flutter_lints) |
 | [flutter\_markdown](./packages/flutter_markdown/) | [![pub package](https://img.shields.io/pub/v/flutter_markdown.svg)](https://pub.dev/packages/flutter_markdown) | [![GitHub issues by-label](https://img.shields.io/github/issues/flutter/flutter/p:%20flutter_markdown?label=)](https://github.com/flutter/flutter/labels/p%3A%20flutter_markdown) | [![GitHub pull requests by-label](https://img.shields.io/github/issues-pr/flutter/packages/p:%20flutter_markdown?label=)](https://github.com/flutter/packages/labels/p%3A%20flutter_markdown) |