Restructure gem to embrace serverless design principles

[nerbyk]

Problem

The current structure of the gem does not conform to Serverless Design Principles. The architecture lacks modularity and scalability, handling multiple scenarios within a single lambda function.

Core Issues:

• Modularity: Absence of a modular structure within the API complicates code maintenance and scalability.
• Serverless Integration: Lack of adherence to serverless design principles impedes smooth integration within serverless environments.