[PATCH] D141691: [lld][COFF] Provide unwinding information for Chunk injected by /delayloaded

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For each symbol in a /delayloaded library, lld injects a small piece of
code to handle the symbol lazy loading. This code doesn't have unwind
information, which may be troublesome.

Provide these information for AMD64.

Thanks to Yannis Juglaret <yjuglaret at mozilla.com> for contributing the
unwinding info and for his support while crafting this patch.

Fix #59639


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D141691

Files:
  lld/COFF/DLL.cpp
  lld/COFF/DLL.h
  lld/COFF/Writer.cpp
  lld/test/COFF/delayimports.test
  lld/test/COFF/delayimporttables.yaml
  lld/test/COFF/giats.s

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