[llvm] Implements PGOBBAddrMap in Object and ObjectYAML with tests [1/5] (PR #71750)

[James Henderson via llvm-commits]

https://github.com/jh7370 approved this pull request.

Two final nitpicks from me (I didn't check to see if there were other cases of the same issue, but if there are, please fix them.

https://github.com/llvm/llvm-project/pull/71750