[google_sign_in] Migrate to Android v2 embedder. (flutter#2624)

[google_maps_flutter] Rename 'Page' in the example app to avoid type …

…conflict with the Flutter Framework. (flutter#2627)

[image_picker] Image picker select preferred camera device (rear, fro…

…nt) (flutter#2621)

[google_sign_in] Add implementations of requestScopes. (flutter#2599)

[google_sign_in] Add implementations of requestScopes. (flutter#2599)

[google_maps_flutter] Avoid unnecessary map element updates (performa…

…nce) (flutter#2235)

changing namespace name

fix google map pubspec

[google_maps_flutter] Fix for bitmap scaling (flutter#1821)

[google_sign_in] update to androidx (flutter#2611)