feat: Support pre-calculated checksums in SIP generation#369

JohannesKarlsen99 wants to merge 6 commits intokeeps:masterkeeps/commons-ip:masterfrom

NationalLibraryOfNorway:Support-pre-calculated-checksums-in-SIP-generationNationalLibraryOfNorway/commons-ip:Support-pre-calculated-checksums-in-SIP-generationCopy head branch name to clipboard