Feature isLocked

[gladiuscode]

This PR implements a new method called isLocked and available for iOS and Android.
It is a synchronous method that returns the current interface orientation status: locked or unlocked.

The JS side exposes the following 3 APIs to access it:

1. RNOrientationDirector.isLocked: we can call this method to get the current status;
2. RNOrientationDiretor.listenForLockChanges: we can call this method to listen for each status change;
3. useIsInterfaceOrientationLocked: we can use this hook to listen to each status change and obtain a state;

[gladiuscode]

It should automatically set isLocked to true when devs set either Portrait or Landscape as the only valid orientation for the activity / window.
It needs the implementation for this feature too.

[gladiuscode]

For some reason the iOS builds fails because it launches Codegen even tho the build itself is set for the old architecture.
I've tried to reproduce it locally, without success.

I need to investigate why it does that, maybe by opening an issue in callstack's repository.