firebase-ios-sdk

Create ZipBuilder CI to compile tooling (#4760)

* Create ZipBuilder CI to compile tooling

This doesn't test, but does ensure that the zip tooling actually builds.

* Style.sh

* Combine zip build and packaging.

Also upload artifacts upon successful zip completion.

* Pass in folder name to build script.

* Fix argument parsing.

* Add -x to script invocation for logging.

* Debugging script building.

* More script debugging.

* Cleanup, actually try the build.

* Temp testing for faster GA iteration.

* Revert temp testing, fix double zip naming.

* Only run package on cron jobs.