I want to set a pdf custom permission, this permission can only be modified, not all, Now, <img width="921" alt="image" src="https://github.com/pdfcpu/pdfcpu/assets/28942808/cf82519e-7283-4ff7-b445-be66fab97b86"> What is the solution? Thanks
