[Pre-GSoC] Create Testing Suite Harness for HealthLLM.jl

[ParamThakkar123]

Description

Design a modular testing framework to validate both generated outputs (LLM responses) and deterministic code-based outputs.

Tasks

• Design a modular testing framework for LLM response validation
• Define golden references for known inputs and expected outputs
• Support execution-based validation where applicable
• Integrate the testing harness with existing CI pipelines
• Provide clear guidelines for adding new tests as the project evolves

A dedicated testing suite improves reliability and enables safe iteration during development.

[harshitchand998-ai]

HI, I want to work on this issue can you pls assign it to me.