[llvm] [SandboxIR] Add callbacks for instruction insert/remove/move ops (PR #112965)

[Jorge Gorbe Moya via llvm-commits]

slackito wrote:

Please take another look. I have also switched callback ids from `int` to `uint64_t` out of concerns (expressed offline) that we could possibly accidentally overflow a 32-bit integer (maybe registering/deregistering callbacks multiple times per region in a very large compile or something like that).

https://github.com/llvm/llvm-project/pull/112965