2220 [url_launcher]remove AndroidX constraint

2228 [url_launcher] Use url_launcher_platform_interface to handle calls

2237 [url_launcher] Migrate url_launcher_web to the platform interface

2274 [url_launcher] DartDoc and test improvements

Plugin: Video Player

We upgraded the Video Player plugin to the new plugin API,
and made some bug fixes. Meanwhile,
we have converted it into a federated plugin to help it
scale more efficiently to multiple platforms.
For more information, refer to Federated plugins.

1813 [video-player] add support for content uris as urls

1998 [video_player] Fix deprecated member use

2124 [video_player] Move [player dispose] to onUnregistered