* [flutter_driver] [fuchsia] Validate existance of cmx for driver tests

Also added an example driver test that can run on Fuchsia devices.

Fixes: https://github.com/flutter/flutter/issues/45624

* update packages for stock example

* fix licenses

* Update project.pbxproj files to say Flutter rather than Chromium

Also, the templates now have an empty organization so that we don't cause people to give their apps a Flutter copyright.

* Update the copyright notice checker to require a standard notice on all files

* Update copyrights on Dart files. (This was a mechanical commit.)

* Fix weird license headers on Dart files that deviate from our conventions; relicense Shrine.

Some were already marked "The Flutter Authors", not clear why. Their
dates have been normalized. Some were missing the blank line after the
license. Some were randomly different in trivial ways for no apparent
reason (e.g. missing the trailing period).

* Clean up the copyrights in non-Dart files. (Manual edits.)

Also, make sure templates don't have copyrights.

* Fix some more ORGANIZATIONNAMEs

No code changes, just comments: I spell-checked all the comments in the repo.

* Reland: [flutter_tool] Fuchsia AOT builds

* Fixes

This reverts commit a57dddd2.

* implicit-casts:false on flutter_tools/lib

* address review comments

* use castStringKeyedMap

* introduce {bool,string,strings}Arg

* fix ci

* [flutter_tool] Use engine flutter_runner prebuilts

* Update packages/flutter_tools/lib/src/fuchsia/fuchsia_build.dart
Co-Authored-By: Jonah Williams <jonahwilliams@google.com>

Slight cleanup of file locations in flutter_tools
to make it easier to see which files are responsible
for data reporting.

* Add emulatorId to Android and iOS emulator devices

* Update docs

* Review tweaks

* Add tests for AndroidConsole for getting avd names

* Remove unused import

* Remove duplicated header

* Fix imports

This reverts commit 445505d6.

Corects a bnuch of typeos throuhgout teh Fluter codebsae.

Made use of the `misspell` tool:
https://github.com/client9/misspell