4145 [flutter_plugin_tools] Improve and test ‘format’ (cla: yes)

4146 [flutter_plugin_tools] Only check target packages in analyze (cla: yes)

4147 Fix webview_flutter Android integration tests and add Espresso (cla: yes, waiting for tree to go green, p: webview_flutter, platform-android)

4148 [various] Prepare plugin repo for binding API improvements (cla: yes, waiting for tree to go green, p: camera, p: video_player)

4149 [flutter_plugin_tools] Make unit tests pass on Windows (cla: yes)

4150 [flutter_plugin_tools] Support format on Windows (cla: yes)

4151 [camera] Introduce camera_web package (cla: yes, p: camera, platform-web)