net/mlx5: DR, Add match STEv1 structs to ifc

Add mlx5_ifc_dr_ste_v1.h - a new header with HW specific
STE structs for version 1.

Signed-off-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>