[llvm] [z/OS][GOFF] Implement support for writing ESD + TXT records by the GOFFObjectWriter (PR #85851)

[Kai Nacke via llvm-commits]

redstar wrote:

I decided to tackle the testing problem first. See https://github.com/llvm/llvm-project/pull/90871 for the first part of obj2yaml.

https://github.com/llvm/llvm-project/pull/85851