cherry picking missing commits from sylabs sif repo

[JasonYangShadow]

cherry picking missing commits from the sylabs sif repo and re-implementing as required.

cherry picked commits include but not limited to:

1. 096293c: chore: bump module Go version to 1.21 sylabs/sif@096293c (chore: bump module Go version to 1.21 sylabs/sif#351)
2. 7ad27b6: refactor: simplify slice logic sylabs/sif@7ad27b6 (chore: bump module Go version to 1.21 sylabs/sif#351)
3. df206d4: refactor: simplify minID calculation sylabs/sif@df206d4 (chore: bump module Go version to 1.21 sylabs/sif#351)
4. 84ca397: refactor: split add/del/set code into files sylabs/sif@84ca397 (refactor: split add/del/set code into files sylabs/sif#364)
5. b85400b: feat: add SetOCIBlobDigest sylabs/sif@b85400b (feat: add SetOCIBlobDigest sylabs/sif#365)
6. fc6a037: refactor: use DSSE wrappers from sigstore sylabs/sif@fc6a037 (refactor: use DSSE wrappers from sigstore sylabs/sif#366)
7. 8783e3b: refactor: improve compaction logic for AddObject sylabs/sif@8783e3b (refactor: improve compaction logic sylabs/sif#373)
8. e8dad67: refactor: improve delete compaction logic sylabs/sif@e8dad67 (refactor: improve compaction logic sylabs/sif#373)
9. 68683b4: feat: add DeleteObjects sylabs/sif@68683b4 (feat: add DeleteObjects sylabs/sif#374)
10. d2a9ddc: fix: address lint with golangci-lint v1.60 sylabs/sif@d2a9ddc (chore: bump golangci-lint to v1.60 sylabs/sif#383)
11. c1fcc37: fix: correct the range check for descriptor IDs sylabs/sif@c1fcc37 (fix: correct the range check for descriptor IDs sylabs/sif#384)
12. 6f00aba: fix: check descriptor capacity during SIF creation sylabs/sif@6f00aba (fix: correct the range check for descriptor IDs sylabs/sif#384)
13. 0d09c53: ci: bump golangci-lint to v1.61 sylabs/sif@0d09c53 (ci: bump golangci-lint to v1.61 sylabs/sif#386)
14. faccf54: build(deps): bump github.com/sigstore/sigstore from 1.8.9 to 1.8.10 sylabs/sif@faccf54 (build(deps): bump github.com/sigstore/sigstore from 1.8.9 to 1.8.10 sylabs/sif#387)

[DrDaveD]

Please update the description to link to all the PRs that you are importing.

I would prefer to see a separate commit corresponding to each sylabs/sif commit but I don't want to make you go through all the work again this time.

[JasonYangShadow]

Please update the description to link to all the PRs that you are importing.

I would prefer to see a separate commit corresponding to each sylabs/sif commit but I don't want to make you go through all the work again this time.

I actually cherry-picking and re-implementing from git diff result. Anyway, I will try including the missing commits.

[DrDaveD]

Also please link to the PRs, so github will show the connections.

[JasonYangShadow]

Also please link to the PRs, so github will show the connections.

added. thanks!

[DrDaveD]

This catches up to the level of v2.19.2