Port "Steady-State: Homodyned Jaynes-Cummings emission" tutorial to QuTiP 5.

[hodgestar]

The Homodyned Jaynes-Cummings emission tutorial is currently only available for QuTiP 4. It needs to be ported to QuTiP 5.

Steps:

• Copy the Markdown notebook into the appropriate folder under tutorials-v5.
• Update the notebook to work with QuTiP 5.
• Make any small improvements needed to the notebook.
• Add some assertions to the end of the notebook to ensure it ran correctly (e.g. check some results).
• Check that the notebook is included in the website build scripts.