Enhancements

[giofontana]

I introduced the following enhancements:

• mybot.py:
  • Added optional LLM_URL parameter, so any OpenAI-compatible LLM can be used (not only OpenAI itself). If not set openai public url is used (https://api.openai.com/v1)
  • Added optional MODEL_NAME parameter. If not set "gpt-4o" is used.
  • Changed TOKEN to DISCORD_TOKEN for clarity
• Readme.md: Added instructions to use venv
• Added Dockerfile and docker-compose in order to build container
• Added gitops folder with K8s manifests, to deploy it on a K8s cluster.