[llvm] MetaRenamer: replaced command line options with pass parameters (PR #133975)

[Arthur Eubanks via llvm-commits]

aeubanks wrote:

given that this pass is just a debugging pass and the pass syntax is gnarly, I'm inclined to keep these as `cl::opt`s, although I don't feel super strongly about that

https://github.com/llvm/llvm-project/pull/133975