Create english README

[LJArendse]

Overview

This pull request aims to create an English README.md file for the gym-md repository. Please let me know if you have any further suggestions.

Changes made

• Modify the gym-md repository README.md to have English language support.
• Create and reference gym-md-env-action-loop.drawio.svg within the repository README.md.
  • Add the source draw.io (https://app.diagrams.net/) gym-md-env-action-loop.drawio file.
• Create and reference env_levels.txt within the repository README.md.

[ganyariya]

@LJArendse Thank you! and awesome Documentation! Thank you very much!(I'm super happy!)

[LJArendse]

@ganyariya No problem, I am glad you like the documentation 👍 . This is a great project and an awesome implementation of Minidungeons. Excellent work 🥇 !