[llvm] [LLVM-C] Add LLVMCreateTargetMachineWithABI (PR #68406)

[Arthur Eubanks via llvm-commits]

aeubanks wrote:

looks good, but we really should have tests like `llvm/unittests/Passes/PassBuilderBindings/PassBuilderBindingsTest.cpp`, can you add some? (sorry that they don't already exist)

https://github.com/llvm/llvm-project/pull/68406