Sk Adds Config Handler Class and an Example Pipeline Workflow

[scarlett-k-nhs]

Summary

What/Why

This branch adds multiple functionality:

1. Functions to define prompt templates and save this to a defined path to then be able to read the data in using the experimental pipeline handler.
2. Yaml files, which are parsed and handled in the ExperimentConfigHandler Class.
3. An example experimental workflow where ollama, local, and gliner are compared.

Checklists

This pull/merge request meets the following requirements:

• [ ] code runs
• [ ] developments are ethical
• [ ] developments are secure (no data or notebook output)
• [ ] you have made proportionate checks that the code works correctly
• [ ] minimum usable documentation written in the docs folder

Comments have been added below around the incomplete checks.