Migrate and fix Optimal control tutorials from qutip-notebooks to qutip-tutorials

[rochisha0]

Migrate and update the Optimal Control tutorials from the qutip-notebooks repository to the qutip-tutorials repository. Ensure all tutorials are compatible with qutip-qtrl instead of the older qutip.control module. This involves revising code, validating outputs, and updating instructions to reflect changes functionality. It also removes the logging to make the tutorials more compact.

To do:

1. Add the optimal-control overview
2. Do the same for v5(?)

[ajgpitch]

I checked the tutorials-v5/optimal-control/control-pulseoptim-Hadamard.ipynb and it imports qutip.control. This is not going work in v5. Needs to use qutip_qtrl.

[rochisha0]

@ajgpitch I have fixed this and added overview. I think we should figure out, which order we want these notebooks to appear. I can name them in that particular order to show in the website index.