[llvm] [OpenMPIRBuilder] Added `createTeams` (PR #65785)

[Kiran Chandramohan via llvm-commits]

kiranchandramohan wrote:

Could you clarify in the patch whether this is based on the parallel construct or the task construct? I believe task had a intermediate wrapper function. Also while reviewing the task construct there were some suggestions to not insert and delete terminators from Michael. I am not suggesting one or the other, but it will be easier to review if it is clarified on which one (among parallel or task) this is based. If there is a reason, that would also be good to know.

https://github.com/llvm/llvm-project/pull/65785