[webview] Fix typos in the README (flutter#4249)

[google_sign_in] add serverAuthCode to GoogleSignInAccount (flutter#4180

)

[flutter_plugin_android_lifecycle] remove placeholder dart file (flut…

…ter#4413)

[camera] Run iOS methods on UI thread by default (flutter#4140)

[image_picker][android] suppress unchecked warning (flutter#4408)

[image_picker_for_web] Added support for maxWidth, maxHeight and imag…

…eQuality (flutter#4389)

[camera] Update [CameraOrientationTests testOrientationNotifications]…

… unit test to work on Xcode 13 (flutter#4426)

[google_sign_in] Add serverAuthCode attribute to google_sign_in_platf…

…orm_interface user data (flutter#4179)

[webview_flutter] Update webview platform interface with new methods …

…for running JavaScript. (flutter#4401)

[google_maps_flutter]: LatLng longitude loses precision in constructo…

…r #90574 (flutter#4374)