Summary:
This is to prepare for enabling TurboModule on Android. This commit compiles in all the core files (C++) into the ReactAndroid NDK build step. This doesn't yet enable TurboModule by default, just compiling in the infra, just like for iOS.
New shared libs:
* libreact_nativemodule_core.so: The TurboModule Android core
* libreact_nativemodule_manager.so: The TurboModule manager/delegate
To be compatible with `<ReactCommon/` .h include prefix, the files had to move to local `ReactCommon` subdirs.
Changelog: [Internal]
Reviewed By: sammy-SC
Differential Revision: D23805717
fbshipit-source-id: b41c392a592dd095ae003f7b2a689f4add2c37a9
Kevin Gozali