[lld] [lld-macho] Add swift support to ObjC category merger (PR #95124)

[via llvm-commits]

alx32 wrote:

Thanks for the report @nocchijiang . The category merger has not yet been productized - so there probably several issues preventing it from being used in real-world scenarios. I don't think anyone is working right now at fixing up the category merger so it might take a while for issues to be addressed. 

https://github.com/llvm/llvm-project/pull/95124