Summary:
This diff adds a NativeLogBox module implementation on iOS to manage rendering LogBox the way we render RedBox, except rendering a React Native component instead of a native view.
The strategy here is:
- initialize: will create a hidden window (the way redbox does) and render the LogBox to it
- show: will show the window
- hide: will hide the window
Most of this is copied from the way RedBox works, the difference here is that we eagerly initialize the window with the `initialize` function so that it's warm by the time LogBox needs to render.
Changelog: [Internal]
Reviewed By: RSNara
Differential Revision: D18750008
fbshipit-source-id: 013e55ded55c8572bb08e0219ff4cd0060ebe0da