* Fix xcode_backend.sh script to support add2app
* Fix ios deployment target. Too old for new Xcode.
* Fix ios host app
* Register plugins with Flutter view
* Prototype
* Fix paths to Flutter library resources
* Invoke pod install as necessary for materialized modules
* Add devicelab test for module use on iOS
* Remove debug output
* Rebase, reame materialize editable
* Add devicelab test editable iOS host app
* Removed add2app test section