Separate kotlin package into multiple packages

[satvik-s]

The idea is to split up the kotlin implementation into two packages, rulesengine-core and rulesengine-json-loader.

Currently, jackson is the only dependency for the kotlin implementation. In order to make the library be fully and easily compatible with front-end clients, it might be better to split out the functionality to persist and store the JSON representation into a separate package and have to core package without any dependencies.

Credit for the idea to the person who approached at All Things Open to ask about cross-platform compatibility of the implementation.

Open to more feedback and thoughts about this!

P.S. use upvote if you align with the idea

[xsor-hbo]

This makes sense. The Kotlin package does not need to provide json loading out of the box.

[satvik-s]

Completed

#35