Request for multi-stage axial compressor example

### Description of the modifications

Hello, thank you for your contributions to ANSYS CFX.

Could you please provide a complete example of a multi-stage axial compressor simulation, including mesh input (e.g., CGNS format), preprocessing setup, solver configuration, and post-processing?

Thank you very much.

### Useful links and references

_No response_

The issue names no repository file, test, or entry point. First identify where PyCFX examples and CGNS mesh input are handled; done means providing a complete multi-stage axial compressor example covering mesh input, preprocessing, solver configuration, and post-processing.

Written by the indexing model from the issue text.