Summary:
This doesn't add new behaviour. It adds NodeDescriptor implementations for rendering Section nodes inside Litho flipper inspector.
We'll consider LithoRecyclerView as the point where we can detect a section hierarchy, and it will (for now) have as a child a DebugSection which is the root of the SectionHierarchy.
Depends on D13802978
Reviewed By: astreet
Differential Revision: D13803272
fbshipit-source-id: a5367d97315349770201a29f5d5bd05baec0405e
e86a5166ad