[llvm] [llvm-objcopy] Add llvm-objcopy option --set-symbol-visibility (PR #80872)

[James Henderson via llvm-commits]

https://github.com/jh7370 commented:

Mostly good. I think it would be good to have a test that shows the order of processing the option with regards to e.g. --localize-hidden.

https://github.com/llvm/llvm-project/pull/80872