Summary: Part of #24875. ## Changelog [General] [Added] - TM add spec for NativeDeviceEventManager Pull Request resolved: https://github.com/facebook/react-native/pull/24914 Reviewed By: RSNara Differential Revision: D15421462 Pulled By: fkgozali fbshipit-source-id: 78b90c615cd031ecd010a552751e506406ab739a