Pull down JB4A-SDK Using CocoaPods

[ericnograles]

Overview

We currently package the entire binary for JB4ASDK for iOS, which makes this package unreasonably large. Implement a way to pull down JB4ASDK using CocoaPods so it can be pulled down only at install time and facilitate using npm scripts.

[ericnograles]

For reference: facebook/react-native#15460

[ericnograles]

It looks like the way we want to do it won't work. Even if I have the JB4ASDK dependency defined in a Podfile for this library, there's no way to automatically pull it down nor link the Xcode Workspace to the React Native project automatically. Will need to revisit in the future as RN adds better support for CocoaPods.

[ericnograles]

Another option here is to create instructions on how to CocoaPod-ify an RN project, add the JB4ASDK dependency, and then finally link this library, but that would be too unwieldy imo.

Maybe a middle ground solution is to add JB4ASDK for iOS as a dependency to this library via GitHub directly, reference a specific tag, and then just reference all the JB4ASDK files in this fashion. That way:

1. We don't have to package the large JB4ASDK binaries with this NPM package
2. We can keep in lockstep with SFMC versions