[llvm] [llvm-readobj][COFF] Add support for more CET and hotpatch flags (PR #150967)

[Martin Storsjö via llvm-commits]

mstorsjo wrote:

Actually, on second thought regarding the test binary - I don't think I see a specific reason why this binary can't just be synthesized using `yaml2obj`? To achieve that, you can run `obj2yaml` on the existing executable, then strip out unnecessary parts of the binary (for the purposes of this test, we don't really need any section contents etc), and curate that into a small yaml file as input for the test. (And in many cases, the input can be in the test file itself instead of requiring a separate input file.)

https://github.com/llvm/llvm-project/pull/150967