created ios command

[EvanBacon]

Why

• Created internal, undocumented run:ios command for dogfooding dev client.

Test Plan

• Command has two different workflows:
  • expo run:ios -- build ios app onto device, this requires expo start --dev-client to also be run in order to start up the bundler.
  • expo run:ios --bundler -- build and setup bundler for dev client apps.
• expo run:ios -d select connected device, should fail unless the device has been provisioned with xcode ahead of time.
• Add a package yarn add expo-camera then rerun expo run:ios, pods should automatically be installed.
• Build logs should always be written to .expo/xcodebuild.md