Fix #2500: Add Crewai alias for backward compatibility

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

tests/test_crewai_alias.py

@@ -0,0 +1,17 @@
+import unittest
+
+class TestCrewaiAlias(unittest.TestCase):
+    """Test the Crewai alias for backward compatibility."""
+
+    def test_crewai_alias_import(self):
+        """Test that Crewai can be imported from crewai.crew."""
+        try:
+            from crewai.crew import Crewai
+            from crewai.crew import Crew
+            
+            self.assertEqual(Crewai, Crew)
+        except ImportError:
+            self.fail("Failed to import Crewai from crewai.crew")
+
+if __name__ == "__main__":
+    unittest.main()