feat: Add multi-round dialogue functionality (fixes #2250)

- Add max_dialogue_rounds parameter to Task class with default of 10
- Update _handle_regular_feedback method to support multiple rounds
- Update _ask_human_input method to display current round information
- Pass max_dialogue_rounds parameter through agent execution flow
- Add tests for Task class max_dialogue_rounds parameter

Co-Authored-By: Joe Moura <joao@crewai.com>

tests/agents/test_multi_round_dialogue.py

@@ -0,0 +1,37 @@
+import unittest
+from unittest.mock import patch
+
+from crewai.task import Task
+
+
+class TestMultiRoundDialogue(unittest.TestCase):
+    """Test the multi-round dialogue functionality."""
+
+    def test_task_max_dialogue_rounds_default(self):
+        """Test that Task has a default max_dialogue_rounds of 10."""
+        # Create a task with default max_dialogue_rounds
+        task = Task(
+            description="Test task",
+            expected_output="Test output",
+            human_input=True
+        )
+        
+        # Verify the default value
+        self.assertEqual(task.max_dialogue_rounds, 10)
+
+    def test_task_max_dialogue_rounds_custom(self):
+        """Test that Task accepts a custom max_dialogue_rounds."""
+        # Create a task with custom max_dialogue_rounds
+        task = Task(
+            description="Test task",
+            expected_output="Test output",
+            human_input=True,
+            max_dialogue_rounds=5
+        )
+        
+        # Verify the custom value
+        self.assertEqual(task.max_dialogue_rounds, 5)
+
+
+if __name__ == "__main__":
+    unittest.main()