Adding support to force a tool return to be the final answer.

This will at the end of the execution return the tool output.
It will return the output of the latest tool with the flag

src/crewai/agents/executor.py

@@ -243,6 +243,7 @@ class CrewAgentExecutor(AgentExecutor, CrewAgentExecutorMixin):
                 tools_names=self.tools_names,
                 function_calling_llm=self.function_calling_llm,
                 task=self.task,
+                agent=self.crew_agent,
                 action=agent_action,
             )
             tool_calling = tool_usage.parse(agent_action.log)