v0.1.8 - CrewAI Integration

CrewAI instrumentation

• Implemented monkey‑patching in traccia/integrations/crewai/instrumentation.py for:
  • Crew.kickoff / Crew.kickoff_async → spans named crewai.crew.kickoff.
  • Task.execute_sync / Task.execute_async → spans named crewai.task.{task_name}.
  • Agent.execute_task → spans named crewai.agent.{role}.
  • crewai.llm.LLM.call → spans named crewai.llm.{model}.
• Spans attach rich attributes (IDs, roles, goals, descriptions, tools, LLM model, async flags, token usage, truncated outputs).
• Uses tracer.start_as_current_span(name, attributes=…) so spans naturally nest under the current context (e.g. app span → crew → task → agent → LLM → OpenAI).