Allow statevector simulation

[quantumjim]

From what I understand, Quantum Audio runs on counts via get_counts().

In Quantum Blur the corresponding function is circuit2probs, which now uses statevector simulation.

It would be good to allow the same method in Quantum Audio.

Perhaps we could use a special version of execute(), as we have for execute_with_sampler(). For this we could then modify get_counts() to construct a counts dictionary from the statevector when this method is used.

[alexalani]

So the SQGD allows for statevector extraction, which is a substitute for measuring the circuit. I need to look into if what you are saying already aligns with the work I have done with Pierre or if it doesn't I will take a deeper look at this.

I discussed with Pierre about making the latest iteration of the SQGD a "fourth demo" in the quantum audio Python package. I would need to update the media folder as well and clean up the notebook.

I want to be better about contributing to the GitHub for quantumaudio this year even if it is in small ways. Such as with issue #39 I need to test it with Python 3.12 since I have only used Python 3.9 which seems to work perfectly fine for quantumaudio in general.