Summary:
This PR moves `DeprecatedViewPropTypes` to a new `DeprecatedViewProps` folder, and copies all documentation comments to the relevant Flow types file.
Pull Request resolved: https://github.com/facebook/react-native/pull/21349
Differential Revision: D10080802
Pulled By: TheSavior
fbshipit-source-id: af4881f3b12e8a1e675b849e0fcf0cc57a68e57f