[llvm] [llvm-readobj] Add a reusable LLVMReadobjDriver library (PR #222917)

[Anutosh Bhat via llvm-commits]

anutosh491 wrote:

Oops I'm sorry If I missed some communication. I shall update the RFC if that's what helps all of us !

My goal is too mostly have a good chunk of the LLVM stack on WasmBolt. I currently support clang, llc, opt, mlir-opt and thought of working on `llvm-readobj`, `llvm-cxxfilt`, `llvm-nm` and other tools.

https://github.com/llvm/llvm-project/pull/222917