Implements LaMBO2 in poli-baselines

[miguelgondu]

• Bring the scaffold.
• Implement an example.
• Clean up the hydra configs.
• Use overwrites instead of the config_path and config_name.
  • Maybe write a class with the relevant parameters and still keep overwrites.
  • Change initialization for an absolute path using initialize_config_dir and add config_path and config_name again.
• Implement an example with updating the configuration.
• Decide what to do when no data is provided.
  • An alternative: at least a value should be provided for x0. We can bootstrap from that using evostrats/directed evolution.
• Add tests.
  • Wait for the wandb issue to be addressed in cortex.
  • In ehrlich, LaMBO2 sometimes proposes - instead of a residue... what should we do then?
• Add documentation.

[RMichae1]

Can replicate example run locally.