[llvm] [RemoveDIs] Update syntax highlighting to include debug records (PR #93660)

[Orlando Cazalet-Hyams via llvm-commits]

https://github.com/OCHyams commented:

Is there someone else you can add to the review that has edited the file or reviewed a recent edit?

Rather than using "fancy" regex I would rather just have `#dbg_assign` `#dbg_label` etc checked separately. Less error prone, easier to read (for me!), but I won't push strongly for it.

Any chance we can get emacs too (https://github.com/llvm/llvm-project/blob/main/llvm/utils/emacs/llvm-mode.el) - I can look at adding later if you're not sure about emacs.

https://github.com/llvm/llvm-project/pull/93660