Summary: The logic in NativeModuleRegistryBuilder.processPackage was getting pretty complex with lot of branches. Moved the logic to get actual packages into each of the packages, instead of having it in NativeModuleRegistryBuilder.
Reviewed By: achen1
Differential Revision: D9618140
fbshipit-source-id: 4be82ec65b0bd92f11f8b77044004e10c9d3b1a1