collective launch

[nanding0701]

Does ROC_SHMEM have a collective launch to avoid potential deadlocks?
https://docs.nvidia.com/nvshmem/api/api/launch.html#nvshmemx-collective-launch

[ppanchad-amd]

@nanding0701. Apologies for the lack of response. Do you still need assistance with this ticket? If not, please close the ticket. Thanks!