Adds support for --bundle-sksl-path to windows, linux, macOS, and iOS.

Fixes #53115

Also combines experiments into extraGenSnapshot/ExtraFrontEndOptions. Allows providing --no-sound-null-safety to allow out of order migration and running.

Fix xcode_backend.sh to strip bitcode for archive build, if the project has bitcode disabled entirely (#57027)

Ensure iOS and android builds can be correctly cached. Use the performance-measurement-file to verify that all targets were skipped on the second invocation. This is only run on the flutter_gallery build.

This reverts commit b8bd09db.

This will allow experimenting with the remove to string transformer before we're ready to turn it on by default. This doesn't work for web yet since we use dart2js instead of the frontend_server for producing kernel

This reverts commit 3e25e60f.

Reland of #50707

Revert "[flutter_tools] Allow providing dart-defines to Android, iOS, macOS builds (#51714)" (#52041)

This reverts commit ee60eeea.

* Move embedding and linking Flutter frameworks into the tool

* Unused import

* Migrate

* Rename run, add comments, remove typedef

* Add status log to tell the user what we did

* Remove Podfile migration, create IOSMigration superclass

* word-smiting
Co-Authored-By: Jonah Williams <jonahwilliams@google.com>

* for space
Co-Authored-By: Jonah Williams <jonahwilliams@google.com>
Co-authored-by: Jonah Williams <jonahwilliams@google.com>

This reverts commit 0a623e87.

This reverts commit 868b0e6d.

This reverts commit c2353b29.

This reverts commit 2a91a750.

Revert "Check Xcode build setting FULL_PRODUCT_NAME for the name of the built app during flutter run (#47266)" (#47568)

This reverts commit 648a5d8a.

Check Xcode build setting FULL_PRODUCT_NAME for the name of the built app during flutter run (#47266)

Revert "Check Xcode build setting FULL_PRODUCT_NAME for the name of the built app during flutter run (#46928)" (#47264)

This reverts commit e54e301d.

Check Xcode build setting FULL_PRODUCT_NAME for the name of the built app during flutter run (#46928)

* 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