Add support for react-native camera@3.23.1

[@Deepu]

Add Support for react-native camera-v3.23.1 requires additional work on the ern side to copy the missing classes to the container.

Currently, when the container is generated we are only copying Java files under android/src/main react-native-camera has placed some of their class files under android/src/general

Because of this, the container fails to build when this dependency is added.

Missing files: https://github.com/react-native-community/react-native-camera/tree/master/android/src/general

Also, the following entry needs to be added to the build.gradle . Currently this is not supported via config.
https://react-native-community.github.io/react-native-camera/docs/installation#android-other-required-steps