[llvm] [llvm-strings] Add --encoding={s,S,utf8} option (PR #221794)

[Harald van Dijk via llvm-commits]

hvdijk wrote:

> Please don't resolve conversation threads that I have started, as I use these to help me track which comments I've checked to make sure any changes have addressed the issue I was raising.

Alright, if you're happy to resolve them once addressed, I'm happy to leave them to you. Most reviewers don't, and I do need *someone* to resolve them to not lose track myself of which ones I've addressed already.

https://github.com/llvm/llvm-project/pull/221794