Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/46958
This will make it easier to link against custom C++ TM which will most likely live inside ./shared or
some other paths outside of ./android.
CMake will have access to `PROJECT_ROOT_DIR` which points to ./android (the folder where the settings.gradle file exists).
Changelog:
[Internal] [Changed] - RNGP - Pass PROJECT_ROOT_DIR to CMake
Reviewed By: cipolleschi
Differential Revision: D64183641
fbshipit-source-id: 347256c04f10e92cf5a13e9c70db16aa29bcb741