[video_player_web] Play videos from assets (flutter#2384)

* [video_player_web] Add support for asset DataSources

* Roll pub version

* Remove deprecated author field

* Respond to review comments

* Add back author field

* Delete author field again

* Fix pubspecs

* Fix handling of packages

* add back author to platform interface

we will fix this when we update the pubspecs for this package

[url_launcher_web] bump the minimal flutter requirement to 1.10.0 (fl…

…utter#2378)

This is the minimal Flutter version required for the plugin platforms manifest.

Fix license

[google_sign_in_platform_interface] Add missing docs (flutter#2359)

[google_maps_flutter] Adds support for buildingsEnabled property (flu…

…tter#2264)

[connectivity] Adds Macos support (flutter#2306)

[camera] Resolve example null exception (flutter#2340)

* [Camera] Resolve example null exception

[video_player] Document public API of video_player_platform_interface. (

flutter#2355)

[video_player_platform_interface] Fix some pedantic lints (flutter#2349)

Fixes unawaited_futures. There are still some undocumented members here
that are unclear to me, so unfortunately the analysis_options.yaml is
still there.

[ android_alarm_manager ] Loosen Flutter SDK lower bound, update READ…

…ME (flutter#2338)