[lld] [llvm] [LLD][COFF] Add more variety of CET and hotpatch flags (PR #150761)

[Alexandre Ganea via llvm-commits]

aganea wrote:

While I am not familiar with these options, I have the impression a lot more is required to support these CET and hotpatching features in the linker, not just emitting the right flags in the binary. I have the feeling we can't just blindly emit these flags if the feature is not there. I'd be fine to support the /flag:no variants for completness, but we cannot give our users the false impression these features are supported when they are not. @sivadeilra @dpaoliello Are you able please to give more insight on this, and/or to assert this PR is indeed in line (or not) with what `link.exe` does?

https://github.com/llvm/llvm-project/pull/150761