[frontend] Unary gate p missing

[lschuetze]

Executing run:factor247_n15 (hybrid-quantum-frontend, test-hybrid-quantum-frontend-medium) 1 None None None
cmd: /Users/lschuetze/git/hybrid-quantum-bench/implementations/hybrid-quantum-frontend.sh -i ../benchmarks/qasmbench/medium/factor247_n15/factor247_n15.qasm -o ../benchmarks/compiler_generated/medium/factor247_n15.mlir
cwd: /Users/lschuetze/git/hybrid-quantum-bench/implementations
Run failed. Return code: 1
Output:

    Traceback (most recent call last):
      File "/Users/lschuetze/git/hybrid-quantum/frontend/qasm/qasm-import.py", line 447, in <module>
        main()
        ~~~~^^
      File "/Users/lschuetze/git/hybrid-quantum/frontend/qasm/qasm-import.py", line 437, in main
        module: Module = QASMToMLIR(code)
                         ~~~~~~~~~~^^^^^^
      File "/Users/lschuetze/git/hybrid-quantum/frontend/qasm/qasm-import.py", line 422, in QASMToMLIR
        visitor.visitCircuit(circuit)
        ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
      File "/Users/lschuetze/git/hybrid-quantum/frontend/qasm/qasm-import.py", line 148, in visitCircuit
        self.visitInstruction(instr.operation, instr.qubits, instr.clbits)
        ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      File "/Users/lschuetze/git/hybrid-quantum/frontend/qasm/qasm-import.py", line 207, in visitInstruction
        self._visitUnaryGates(instr, qubits, clbits)
        ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
      File "/Users/lschuetze/git/hybrid-quantum/frontend/qasm/qasm-import.py", line 267, in _visitUnaryGates
        raise NotImplementedError(f"Unary gate {instr}")
    NotImplementedError: Unary gate Instruction(name='p', num_qubits=1, num_clbits=0, params=[0.0])