[Packages tooling] Update fetch deps command to support ios dependencies in cocopods 

I think the closest equivalent to "pub get" or "gradlew dependencies" is "pod install" 

Related to https://github.com/flutter/flutter/issues/130279 

Related  https://cocoacasts.com/how-to-manage-dependencies-with-cocoapods/ 