[lld] [LLD][COFF] Add S_THUNK32 PDB records for all ARM64EC import thunks (PR #115310)

[Martin Storsjö via llvm-commits]

https://github.com/mstorsjo commented:

I think this looks reasonable and correct, but I think it would be good to have a second look from people who know PDB better than me, so CC @rnk.

I don't mind approving this after a couple days, if there's no interest in commenting on it, from the other usual lld/COFF reviewers. 


https://github.com/llvm/llvm-project/pull/115310