Quantum computing basics (#710)

* Add tutorial code for quantum computing basics tutorial

* Blacken

* Final QA

---------

Co-authored-by: Bartosz Zaczyński <[email protected]>

Author: martin-martin

quantum-computing-basics/README.md

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+# Quantum Computing Basics With Qiskit
+
+Code examples for the Real Python tutorial on [Quantum Computing Basics With Qiskit](https://realpython.com/quantum-computing-basics/).
+
+## Requirements
+
+- Python 3.10+
+- Dependencies from `pyproject.toml`
+
+## Running the Examples
+
+You can use uv to run the main example, which creates a simple quantum circuit with a Hadamard gate and measurement:
+
+```sh
+$ uv run quantum_circuit.py
+```

quantum-computing-basics/pyproject.toml

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+[project]
+name = "quantum-computing-basics"
+version = "0.1.0"
+requires-python = ">=3.10"
+dependencies = [
+    "qiskit[visualization]==2.2.3"
+]

quantum-computing-basics/quantum_circuit.png

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+from qiskit import ClassicalRegister, QuantumCircuit, QuantumRegister
+
+qr = QuantumRegister(1, name="quantum")
+cr = ClassicalRegister(1, name="classical")
+qc = QuantumCircuit(qr, cr)
+
+qc.h(0)
+qc.measure(0, 0)
+
+qc.draw("mpl", filename="quantum_circuit.png")