Refactor AgentOps event listener for crew-level tracking

- Modify AgentOpsListener to handle crew-level events
- Initialize and end AgentOps session at crew kickoff and completion
- Create agents for each crew member during session initialization
- Improve session management and event recording
- Clean up and simplify event handling logic

src/crewai/utilities/evaluators/task_evaluator.py

@@ -3,10 +3,10 @@ from typing import List
 from pydantic import BaseModel, Field
 
 from crewai.utilities import Converter
-from crewai.utilities.events import event_bus
-from crewai.utilities.events import TaskEvaluationEvent
+from crewai.utilities.events import TaskEvaluationEvent, event_bus
 from crewai.utilities.pydantic_schema_parser import PydanticSchemaParser
 
+
 class Entity(BaseModel):
     name: str = Field(description="The name of the entity.")
     type: str = Field(description="The type of the entity.")