[llvm] [llvm-objcopy] Add possibility to verify .note section format (PR #90458)

[James Henderson via llvm-commits]

jh7370 wrote:

> (rebased to fix merge conflict)

Please review the LLVM pull request guidelines: do not do a force push unless absolutely essential. You can use merge commits to merge in changes from main into your feature branch instead. Using a force push results in the old commits being wiped and it is no longer trivial to diff the change against the previous version that was reviewed.

https://github.com/llvm/llvm-project/pull/90458