Classic confinement request for duf-utility

@muesli I appreciate your point of view on this but at this stage, referring to the process for classic confinement requests I don’t believe duf-utility fits into one of the existing categories for classic confinement. Whilst we have a debug tools entry there, this is more related to actual debuggers and similar, not observational tools like this. So at this stage, I don’t think it is appropriate to grant classic confinement for duf-utility.