Fix issue #2526: Add utility to resolve ModuleNotFoundError when running flows from custom scripts

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

examples/custom_flow_script.py

@@ -0,0 +1,25 @@
+"""
+Example script showing how to run a CrewAI flow from a custom script.
+
+This example demonstrates how to avoid the ModuleNotFoundError when 
+starting flows from custom scripts outside of the CLI command context.
+"""
+import os
+
+from crewai.utilities.path_utils import add_project_to_path
+
+add_project_to_path()
+
+from my_flow.main import MyFlow
+
+def main():
+    """Run the flow from a custom script."""
+    flow = MyFlow()
+    
+    result = flow.kickoff()
+    
+    print(f"Flow completed with result: {result}")
+
+
+if __name__ == "__main__":
+    main()