Add check for duplicate qubits post gate broadcast

[TheGupta2012]

Fixes #75

Summary of changes

• Introduced the static methods extract_duplicate_qubit and verify_gate_qubits in Qasm3Analyzer to detect and raise errors for duplicate qubits in quantum gates.

• Removed the duplicate bit check logic from the _get_op_bits method in src/pyqasm/visitor.py, as this validation is now handled by the new verify_gate_qubits method. [1] [2]

• Updated the _visit_basic_gate_operation and gate_function methods in src/pyqasm/visitor.py to use the new verify_gate_qubits method for checking duplicate qubits. [1] [2]

• Added a new test case for duplicate qubits in tests/qasm3/resources/gates.py to ensure the new validation logic works as expected.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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