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

This reverts commit c64ace84.

* Update template .gitignore rules

* Remove old packages rule

* Remove IDE folders from gitignore templates

* Prefer ios.tmpl/.gitignore

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

* android templates should add density and screenLayout to config changes

* update the rest of the manifests

Fixes https://github.com/flutter/flutter/issues/14975

Dart is migrating to .dart_tool/ as the location for cached artifacts
and other temporary files generated by tooling in the SDK. As part of
this, pub will be migrating from .pub to .dart_tool/pub.

In future, this path will also be used for other tooling, such as package:build.

* update the IntelliJ metedata templates

* fix test expectation

These URLs all automatically redirect HTTP to HTTPS so makes sense to point users at the secure versions.

Fixes https://github.com/flutter/flutter/issues/13972

* Revert "Revert "Enable developers to run pod from terminal directly and skip pod install if possible. (#13374)" (#13770)"

This reverts commit 0759043e.

* some nits on cocoapods code

* put back the FLUTTER_FRAMEWORK_DIR env variable

Revert "Enable developers to run pod from terminal directly and skip pod install if possible. (#13374)" (#13770)

This reverts commit c6a17525.

Avoids running pod install if .flutter-plugins and its flutter framework pod dependency didn't change

Adds .vscode/ to the .gitignore rules generated on flutter create.

* Update plugin test template.

* Add flutter test run verification.

* Tweak and test runs for package projects.

* 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