[lld] [lld][ELF] Implement merged .debug_names section (PR #88092)

[Alexander Yermolovich via llvm-commits]

ayermolo wrote:

> I added some reviewers that have more context.

@clayborg the review is happening here: https://github.com/llvm/llvm-project/pull/86508

https://github.com/llvm/llvm-project/pull/88092