Summary:
I've outlined the tasks required to get iOS device support working for open source users [here](https://github.com/facebook/flipper/issues/262).
This is the first step. It publishes the same code we use internally to GitHub, but in a state where it is only "available" for non-public builds. This will not change any behavior, but means that together with the community, we can start adapting it to suit everyone, and then eventually flip "available" to true for everyone.
Reviewed By: passy
Differential Revision: D21740193
fbshipit-source-id: 586c79ad850f67da330c10a007605ff25a187544
5723553fba