[CIR] Add dedicated setjmp op

[badumbatish]

From PR #1842, comment #1842 (comment)

Andy: Do we want a dedicated CIR operation for this? It's pretty significant for analyzing control flow. That could maybe be added in a follow-up PR.

[bcardosolopes]

@badumbatish let me know if you want this to be assigned to you :)

[badumbatish]

Ill take it up, tysm

[bcardosolopes]

Had to revert it, re-opening

[badumbatish]

Ill reapply the pr with the correct formatting on stride