2383 [url_launcher] Adds macOS package with example app (cla: yes)

2384 [video_player_web] Play videos from assets (cla: yes)

2385 [shared_preferences] Adds macOS support with example app (cla: yes)

2386 [url_launcher] Endorse macos package (cla: yes)

2388 [shared_preferences] Endorse shared_preferences (cla: yes)

2389 [video_player] Endorse web implementation. (cla: yes)

2390 [shared_preferences] Endorse web plugin. (cla: yes)

2391 [ios_platform_images] Add ios platform images (cla: yes)

2392 [shared_preferences_web] Prepare to be endorsed (cla: yes)