Feature/sdk run evals dataset

[akshat-g]

Summary by CodeRabbit

• New Features

  • Added methods to log dataset and batch results to Athina.
  • Introduced a new import statement for Dataset.
  • Added a function to remove keys with None values when creating datasets.

• Refactor

  • Updated BaseEvaluator by removing eval_request_id assignment in run_batch.
  • Modified BatchRunResult class by removing eval_request_id attribute.
  • Added an abstract method load_athina_inferences in BaseLoader class.

• Documentation

  • Added a function in dataset_helper.py to generate unique dataset names based on timestamps.