Add name and expected_output to TaskOutput (#1199)

* Add name and expected_output to TaskOutput

This commit adds task information to the TaskOutput class. This is
useful to provide extra context to callbacks.

* Populate task name from function names

This commit populates task name from function names when using
annotations.

tests/project_test.py

@@ -14,6 +14,14 @@ class SimpleCrew:
     def simple_task(self):
         return Task(description="Simple Description", expected_output="Simple Output")
 
+    @task
+    def custom_named_task(self):
+        return Task(
+            description="Simple Description",
+            expected_output="Simple Output",
+            name="Custom",
+        )
+
 
 def test_agent_memoization():
     crew = SimpleCrew()
@@ -33,3 +41,15 @@ def test_task_memoization():
     assert (
         first_call_result is second_call_result
     ), "Task memoization is not working as expected"
+
+
+def test_task_name():
+    simple_task = SimpleCrew().simple_task()
+    assert (
+        simple_task.name == "simple_task"
+    ), "Task name is not inferred from function name as expected"
+
+    custom_named_task = SimpleCrew().custom_named_task()
+    assert (
+        custom_named_task.name == "Custom"
+    ), "Custom task name is not being set as expected"