feature: human input per task (#395)

* feature: human input per task

* Update executor.py

* Update executor.py

* Update executor.py

* Update executor.py

* Update executor.py

* feat: change human input for unit testing
added documentation and unit test

* Create test_agent_human_input.yaml

add yaml for test

---------

Co-authored-by: João Moura <joaomdmoura@gmail.com>

src/crewai/task.py

@@ -70,6 +70,10 @@ class Task(BaseModel):
         frozen=True,
         description="Unique identifier for the object, not set by user.",
     )
+    human_input: Optional[bool] = Field(
+        description="Whether the task should have a human review the final answer of the agent",
+        default=False,
+    )
 
     _original_description: str | None = None
     _original_expected_output: str | None = None