2407 Update endorsed macos plugins readme and update others (cla: yes)

2408 [video_player_web] add a no-op android folder (cla: yes)

2409 [shared_preferences] add a no-op android folder to web/macos packages (cla: yes)

2410 [google_sign_in_web] Add a no-op Android implementation (cla: yes)

2411 Remove AndroidX references from no-op android implementations (cla: yes)

2412 [shared_preferences web/macos] remove unused onMethodCall methods (cla: yes)

2414 [ios_platform_images] Made ios_platform_images set the correct image scale. (cla: yes)

2417 [plugin_platform_interface] Don’t use const Object as a token (cla: yes)