net/mlx5: add policer rules operations

net/mlx5: add policer rules operations

This commit create the color rules on the meter table for the packets.

As the prefix flow with meter action colors the packets, the packets
are transferred to the meter table with meter color match flows. Here
we create the flow rules  with green yellow red actions on the meter
table. Packets match the color will be processed by the related color
flow rule.

Signed-off-by: Suanming Mou <suanmingm@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>