e2e graph builder eval

[prasmussen15]

[!IMPORTANT] Adds evaluation and utility functions for graph building, along with integration test setup.

• Evaluation Functionality:
  • Adds eval_add_episode_results function in eval.py to compare baseline and candidate graph data.
  • Introduces EvalAddEpisodeResults model in eval.py to store evaluation results.
• Utility Functions:
  • Implements create_episodes_from_messages and ingest_and_label_snippet in utils.py for episode processing.
  • Adds entity_to_dict and dict_to_entity for entity serialization/deserialization in utils.py.
• Testing:
  • Adds eval_e2e_graph_building.py for end-to-end graph building evaluation.
  • Configures pytest.ini for integration tests.
  • Implements setup_logging in utils.py for logging setup.

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