[lld] [lld][ELF] Implement merged .debug_names section. (PR #86508)

[Alexander Yermolovich via llvm-commits]

ayermolo wrote:

lGTM.
Personally I think it would be worth to see if the debug code can be in it's own file, but I can't really make a strong argument for it beyond putting everything into one file just seems messy. There is precedence of GDBIndex is part of SyntheticSections.cpp. I guess one argument would be that since LLD supports more and more DWARF related stuff it might be good to isolate DWARF related code in it's own directory, instead of scattered through various files.

https://github.com/llvm/llvm-project/pull/86508