Move the agent factory modules to a separate package

What does this merge request do and why?

This MR moves the agent factory modules to a separate package

How to set up and validate locally

1. Check out to this merge request's branch.
2. Install dependencies.

   poetry run install

3. Check the existing commands ELI5 provides:

   poetry run eli5 agent-factory --help

Merge request checklist

• Tests added for new functionality. If not, please raise an issue to follow up.
• Documentation added/updated, if needed.