Add tests for IBPUT/IBGET

[philipmarshall21]

This PR adds tests for the IBPUT/IBGET APIs (currently shmemx extensions, but ratified and to be included in a later OpenSHMEM spec version).

[philipmarshall21]

@wrrobin It may be good to add Bryan, Mark, and Parker as contributors to this repo as well

[wrrobin]

@philipmarshall21 - This looks good. One comment is that when we move these interfaces to shmem from shmemx, the test cases can be merged with c11_test_shmem_get/put.c and cxx_test_shmem_get/put.cpp rather than separate ones.

[wrrobin]

Approved. Please take care of the minor comments.

[philipmarshall21]

@philipmarshall21 - This looks good. One comment is that when we move these interfaces to shmem from shmemx, the test cases can be merged with c11_test_shmem_get/put.c and cxx_test_shmem_get/put.cpp rather than separate ones.

Yep, totally agree!

[philipmarshall21]

Approved. Please take care of the minor comments.

Recommended changes have been applied. Not sure that I should merge just yet. The SOS CI would fail when trying to build the new tests because the function declarations are not present in shmemx.h (except in the SOS PR that adds ibput/ibget implementation). May be best to wait until SOS PR 1114 is reviewed and ready to be merged. Then we could merge this PR, run the CI on PR 1114 once more and merge it

[davidozog]

The tests do not cover the API well because dest stride, source stride, block size, and num blocks are all constant/trivial. I think we can pretty easily add basic checks here, but it's ok to punt on it for now.