[core] deprecate implementation detail zip headers since there is RZip public interface

[ferdymercury]

This Pull request:

Changes or fixes:

This is necessary step before #23270

At the moment, the headers are just copy-pasted where used. Once they are fully removed in 6.46, one can recreate them in a private folder. I wanted to prevent now creating them with the same name in two different folders which calls for problems.

[github-actions]

Test Results

    23 files      23 suites   3d 18h 7m 48s ⏱️
 3 883 tests  3 883 ✅ 0 💤 0 ❌
79 003 runs  79 003 ✅ 0 💤 0 ❌

Results for commit c2679e7.

♻️ This comment has been updated with latest results.

[pcanal]

I think it is fine to deprecate those headers. Thanks.