[flang] [llvm] [flang][OpenMP]Add support for OpenMP ERROR directive (PR #119582)

[Mats Petersson via llvm-commits]

Leporacanthicus wrote:

I'm not entirely sure if I'm missing something here, or this is just my first "real construct" that I've added, so I had to add it to the flangOmpReport tool. 

https://github.com/llvm/llvm-project/pull/119582