support llvm 16.0.0

[rishavs]

LLVM 16 was released in March 2023.
Adding this issue to track the work for supporting llvm 16.0.0

Note; I do know that llvm 15 is also pending and is being tracked at #222

[mewmew]

@rishavs thanks for adding the tracking issue for LLVM 16.0.

We'll see who gets first to adding support for 15 and 16 to llir/llvm. Neither @dannypsnl nor I have had the time to do it, and for me personally, I won't have time until at least a couple of months as I'm out trekking in the Rockies and travelling during the summer.

Happy summer wishes,
Robin

[rishavs]

no worries. Its not a blocker for me anyway, nor am I planning to use any v16 features. I added the issue more for tracking.
have an amazing summer!