Refactored LM objects, Sampler objects, Simulator code

• Refactored LLM objects to make them a bit more organized
• added Sampler object w/ Sampling output dataclass that has some helpful functions:
  - automatically generates an image for you
  - automatically generates txt file of level
  - has play function that lets you play interactively
  - has run_astar function that lets you watch the astar agent
• Simulator object that interacts with mario jars from https://github.com/shyamsn97/Mario-AI-Framework