2470420ba [local_auth] Migrate maven repo from jcenter to mavenCentral (flutter/plugins#3917) (#83451)

Windows plugins are designed to share implementations between Win32 and
UWP, but not all plugins will support both. This adds a new
'supportedVariants' key to Windows plugins that allows specifying
'win32' and/or 'uwp' (and potentially others in the future in case that
becomes necessary).

Plugins without any supported variants will be assumed to be Win32 for
backward compatibility.

This will allow compiling Windows projects that use Win32-only Windows
plugins (which is currently all of them) in UWP mode. The plugins will
of course throw missing implementation exceptions at runtime, but tehy
won't prevent being able to build as they currently do.

Fixes https://github.com/flutter/flutter/issues/82815

8f4c774ff [video_player] Add URL for exoplayer to maven for all dependents (flutter/plugins#3979) (#83436)

[flutter_tools] Add documentation to "cmdline-tools component is missing" doctor validation error (#83356)

This reverts commit c835ad43.

* bb9132306 Roll Fuchsia Linux SDK from l5hYeTpdW... to oT8kKQch3... (flutter/engine#26362)

* e5aa8c267 Roll Skia from 29670b085358 to 09eb337d304a (1 revision) (flutter/engine#26363)

* d467149ce Roll Fuchsia Mac SDK from nRqbdi_ZK... to -F-5r68i6... (flutter/engine#26364)

* 9d919e15f Roll Skia from 09eb337d304a to 0e4477e7139a (1 revision) (flutter/engine#26365)

This adds iOS key map generation that uses std::maps. It uses std::maps because on iOS if we use NSDictionaries, then when XCode loads the dylib, the initialization of those status NSDictionaries hasn't yet occurred, and it crashes the app. std::maps have a well-defined static behavior, and are correctly initialized.

I also made the naming of variables, fields, etc. consistent for macOS. We variously had macosFoo, macOSFoo, and macOsFoo. I eliminated macOsFoo and macosFoo, since the rest of the repo uses macOSFoo for lowerCamelCase names (with only a few exceptions). I used iOSFoo for iOS.

* Migrate flutter conductor out of dev/tools and into its own directory

* flesh out documentation

* fix analysis options

* fix integration test

* Make RouteInformationProvider value non nullable

* fix more lint

2576d6b8b [camera] android-rework part 4: Android flash and zoom features (flutter/plugins#3798) (#83364)

This is bassically reapplying #71721, but only enables it on web tests.

There are known issues that several tests under the `integration.shard`
depend on a specific platform, and as a result they require some
additional flexiblity (bots need to build more than one engine, and the
test flags should allow for secondary engines to be picked by such
tests).

By enabling this on the web-test shard, we will reduce the false
positives in the dart-flutter-HHH-web bot.

Fixing the more general problem is tracked by #72368.