Created by: bogo
Buck will not auto-create schemes for app extensions that are subtypes of the APP_EXTENSION (com.apple.product-type.app-extension ) type. Those are, among others, the iMessage apps. (com.apple.product-type.app-extension.messages)
To avoid adding all possible extension types to the ProductTypes, this PR modifies scheme creation to check if the product type BEGINS with the parent extension type. Open to other suggestions on how to fix this if this is deemed too hacky!