Move ReactMarker to `reactnativejni_common` as it's used in NewArch also (#50511)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/50511

Reland of D72384347

ReactMarker is currently loading the whole `reactnativejni` which we should not be loading in NewArch.
This is resulting in a warning fired for all the NewArch users with `legacyWarningsEnabled`.

I'm cleaning this up by moving it inside `reactnativejni_common`.

Changelog:
[Internal] [Changed] - Move ReactMarker to `reactnativejni_common` as it's used in NewArch also

Reviewed By: javache

Differential Revision: D72552075

fbshipit-source-id: bbc75aada1564f6f54ea70a8dd4f5145d4a3ffaa