[image_picker] Add web support to the example app. (flutter#2816)

[image_picker_for_web] Remove android directory. (flutter#2817)

[image_picker_for_web] Introduce image_picker_for_web package (flutte…

…r#2802)

[path_provider] linux endorsement (flutter#2789)

Endorses path_provider_linux, manually registering its implementation as a workaround for flutter/flutter#52267

[path_provider] linux endorsement (flutter#2789)

Endorses path_provider_linux, manually registering its implementation as a workaround for flutter/flutter#52267

[path_provider] linux endorsement (flutter#2789)

Endorses path_provider_linux, manually registering its implementation as a workaround for flutter/flutter#52267

[path_provider] linux endorsement (flutter#2789)

Endorses path_provider_linux, manually registering its implementation as a workaround for flutter/flutter#52267

[image_picker] Port plugin to use the new Platform Interface. (flutte…

…r#2797)

This change Deprecates the old plugin API, but keeps it available.

Check the README.md for migration advice to the newest API.

[image_picker] Pin version of platform_interface. (flutter#2799)

Error (flutter#2796)

* Expose SKError code to client apps

* Format

* Update changelog

* Fix failing tests

* Added version updates in pubspec

* Fix test