Feature proposal

• Firebase Component: All

Swift Package Manager support is great and has enabled a much easier integration with many projects which use Firebase, however this comes at a cost of having each developer to compile all of the sources. Swift Package Manager added support for binaryTarget dependencies and from looking at https://github.com/firebase/firebase-ios-sdk/tree/master/ZipBuilder you've already made a start on this but is still lacking things like x86_64 support.

I am raising this as it will likely save hundreds if not thousands of hours of developers time in due course.