Summary:
The jsi library itself is `jsi/jsi.{h,cpp}`. JSIDynamic provides support for converting between folly::dynamic and jsi::value, independent of the jsi library.
Changelog:
[iOS][Changed] Moved JSIDynamic out of React-jsi and into React-jsidynamic
Reviewed By: cipolleschi, dmytrorykun
Differential Revision: D40334023
fbshipit-source-id: d2c69e7afb7f43f93080301b88c81e1fa46279d7