Generated.xcconfig is only required at build time for iOS apps. In the
flutter create project template and example apps, Generated.xcconfig was
previously marked as a resource to be bundled into the built app.

Uses the `version` property from the `pubspec.yaml` file to set the corresponding fields in the `local.properties` file respectively in the `Generated.xcconfig` file.

The `--build-name` and `--build-number` options have changed. Now they trump the `version` property from the `pubspec.yaml` file.

If the `version` property is not set and the  `--build-name` and `--build-number` options are not provided, the build command will not change the `local.properties` / `Generated.xcconfig` file.

Eliminates the restrictions to build in arm64 mode only in iOS project
templates created by flutter create.

add --buildNumber and --buildName to flutter build like
flutter build apk --buildNumber=42 --buildName=1.0.42

* Revert "Revert engine (#13547)"

This reverts commit ee65db11.

* Keep flaky mark

* Revert "Include a directory with Flutter assets (#12944)"

This reverts commit 3af6b9cb.

* Revert "Upgrade project.pbxproj to include flutter_assets (#13011)"

This reverts commit 08128cb2.

* Revert "Upgrade complex_layout project.pbxproj to include flutter_assets (#13544)"

This reverts commit 35f1a041.

* mark complex_layout_ios__start_up as flaky

Dropped optional semicolons.

* start

* with create

* refactor cocoapod code, add tests

* fix tests

* throw when cocoapod missing

* obj-c projects don’t use use_framework!