google.adk.evaluation._eval_set_results_manager_utils.create_eval_set_result()
https://github.com/google/adk-python/blob/v1.23.0/src/google/adk/evaluation/_eval_set_results_manager_utils.py#L31
google.adk.evaluation.eval_result.EvalCaseResultのlistをgoogle.adk.evaluation.eval_result.EvalSetResultに変換する