RDMA/mana_ib: UD/GSI work requests

Implement post send and post recv for UD/GSI QPs.
Add information about posted requests into shadow queues.

Co-developed-by: Shiraz Saleem <shirazsaleem@microsoft.com>
Signed-off-by: Shiraz Saleem <shirazsaleem@microsoft.com>
Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
Link: https://patch.msgid.link/1737394039-28772-10-git-send-email-kotaranov@linux.microsoft.com


Signed-off-by: Leon Romanovsky <leon@kernel.org>