Improved chat parsing with no AI logic

[goncalomoita]

This fixes compatibility issues in PR #87 that have arisen from recent changes to the repository. Additionally, an improvement to the parser unit tests has been done.

The goal of the this parser is to make sense of what the LLM has provided without requiring another inference call which adds time and cost overhead. My remarks on this matter were stated in #35. Further debate has been conducted in PR #94