Port FIRBundleUtil to Swift#15767

ryanwilson wants to merge 1 commit intorw-ai-testingfirebase/firebase-ios-sdk:rw-ai-testingfrom

surveyor-bundleutil-swift-18274108948871056156firebase/firebase-ios-sdk:surveyor-bundleutil-swift-18274108948871056156Copy head branch name to clipboard