3853 Enable analysis for the tool directory (cla: yes)

3857 Ensure that integration tests are actually being run (cla: yes, p: battery, p: webview_flutter, p: android_alarm_manager, p: android_intent, p: google_maps_flutter, p: google_sign_in, p: image_picker, p: in_app_purchase, p: integration_test, p: local_auth, p: path_provider, p: share, p: url_launcher, p: video_player, p: package_info, p: shared_preferences, p: wifi_info_flutter, p: sensors, p: quick_actions, p: connectivity, p: device_info, platform-windows, platform-macos, platform-linux, platform-web)

3859 [google_sign_in] fix registration links (cla: yes, p: google_sign_in)