net/mlx5: wrap sampling actions per OS

net/mlx5: wrap sampling actions per OS

Wrap glue calls dr_create_flow_action_sampler() and
dr_create_flow_action_dest_array() as OS-specific functions.
This is a follow up on
commit b293fbf9672b ("net/mlx5: add OS specific flow actions operations")

On Windows, the sampling actions wrappers currently return ENOTSUP.
Using configuration definitions HAVE_MLX5_DR_CREATE_ACTION_FLOW_SAMPLE and
HAVE_MLX5_DR_CREATE_ACTION_DEST_ARRAY the missing sampling DV structs
are added as stubs to windows/mlx5_glue.h file.

Signed-off-by: Ophir Munk <ophirmu@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>