CLI: modules package refactor PoC

Problem

• During the QA phase there were multiple bugs, improvement ideas, inconsistencies found.
• We've noticed that some things require changes of similar things in multiple places in order to work consistently. That suggest there's a room for architectural improvement.
• Over the course of months the requirements for community modules were changing and now we're at point where we already have a good idea how we want things to work. The modules package grew big enough that there's a solid reason to think about incorporating more mature architectural solutions.

Expected output:

• The first command that's going to be refactored is kyma module catalog
• The idea is to do research on approaches that could be used in order to structure the code more efficiently, in a way that would allow for a better scalability, readability and maintainability.
• From the user perspective, the kyma module catalog command should work similarly as the previous version.
• The command should be available under the kyma alpha module catalog command - both versions are still available to the user.
• Prepare the ADR document that will describe solutions used in the refactored code.

Locate the implementation of the kyma module catalog command and run it to establish its current behavior. Research architectural approaches for restructuring the modules package while preserving that behavior, expose the refactored command under kyma alpha module catalog, and document the chosen solution in an ADR.