Add Labeler Github Action (flutter#3433)

.github/labeler.yml

@@ -0,0 +1,86 @@
+'p: android_alarm_manager':
+  - packages/android_alarm_manager/**/*
+
+'p: android_intent':
+  - packages/android_intent/**/*
+
+'p: battery':
+  - packages/battery/**/*
+
+'p: camera':
+  - packages/camera/**/*
+
+'p: connectivity':
+  - packages/connectivity/**/*
+
+'p: cross_file':
+  - packages/cross_file/**/*
+
+'p: device_info':
+  - packages/device_info/**/*
+
+'p: e2e':
+  - packages/e2e/**/*
+
+'p: espresso':
+  - packages/espresso/**/*
+
+'p: file_selector':
+  - packages/file_selector/**/*
+
+'p: flutter_plugin_android_lifecycle':
+  - packages/flutter_plugin_android_lifecycle/**/*
+
+'p: google_maps_flutter':
+  - packages/google_maps_flutter/**/*
+
+'p: google_sign_in':
+  - packages/google_sign_in/**/*
+
+'p: image_picker':
+  - packages/image_picker/**/*
+
+'p: in_app_purchase':
+  - packages/in_app_purchase/**/*
+
+'p: integration_test':
+  - packages/integration_test/**/*
+
+'p: ios_platform_images':
+  - packages/ios_platform_images/**/*
+
+'p: local_auth':
+  - packages/local_auth/**/*
+
+'p: package_info':
+  - packages/package_info/**/*
+
+'p: path_provider':
+  - packages/path_provider/**/*
+
+'p: plugin_platform_interface':
+  - packages/plugin_platform_interface/**/*
+
+'p: quick_actions':
+  - packages/quick_actions/**/*
+
+'p: sensors':
+  - packages/sensors/**/*
+
+'p: share':
+  - packages/share/**/*
+
+'p: shared_preferences':
+  - packages/shared_preferences/**/*
+
+'p: url_launcher':
+  - packages/url_launcher/**/*
+
+'p: video_player':
+  - packages/video_player/**/*
+
+'p: webview_flutter':
+  - packages/webview_flutter/**/*
+
+'p: wifi_info_flutter':
+  - packages/wifi_info_flutter/**/*

.github/workflows/pull_request_label.yml

@@ -0,0 +1,20 @@
+# This workflow applies labels to pull requests based on the
+# paths that are modified in the pull request.
+#
+# Edit `.github/labeler.yml` to configure labels.
+#
+# For more information, see: https://github.com/actions/labeler
+
+name: Pull Request Labeler
+
+on:
+  - pull_request_target
+
+jobs:
+  label:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/labeler@main
+      with:
+        repo-token: "${{ secrets.GITHUB_TOKEN }}"
+        sync-labels: true