3220 [in_app_purchase] Remove the custom analysis options, fix failing lints. (cla: yes)

3221 [video_player][device_info] announce 1.0 (cla: yes)

3224 [google_maps_flutter_web] show only single infoWindow (cla: yes)

3227 [in_app_purchase] Bump version (cla: yes)

3229 [camera] Add missing Dartdocs (cla: yes)

3233 [video_player] Add toString() to Caption (cla: yes)

3235 [connectivity] Fix IllegalArgumentException (cla: yes)

3237 Update contribution guide for xcuitests (cla: yes)

3238 [multiple] Remove custom analysis_options.yaml from web plugins. (cla: yes, waiting for test harness)