interpreter: add missing scf ops

[compor]

Missing interpreter functions for scf operations (split off from #3784 CC @erick-xanadu):

@interpreter.register_impls
class ScfFunctionsExt(interpreters.scf.ScfFunctions):

    @interpreter.impl_terminator(scf.ConditionOp)
    def run_conditionop(self, interp: interpreter.Interpreter, op: scf.ConditionOp, args: interpreter.PythonValues) -> interpreter.PythonValues:
        return interpreter.ReturnedValues(args), ()

    @interpreter.impl(scf.WhileOp)
    def run_whileop(self, interp: interpreter.Interpreter, op: scf.WhileOp, args: interpreter.PythonValues) -> interpreter.PythonValues:
        results = args

        while True:
            before_region = op.before_region
            results = interp.run_ssacfg_region(before_region, (*results,), "while.before_region")
            if not results[0]:
                break

            results = results[1:]
            after_region = op.after_region
            results = interp.run_ssacfg_region(after_region, (*results,), "while.after_region")
        return results[1:]