net/mlx5: add translation of connection tracking action

net/mlx5: add translation of connection tracking action

When creating a flow with this action context for CT, it needs to be
translated in 2 levels.

First, retrieve from action context to rte_flow action.
Second, translate it to the corresponding DR action with traffic
direction that was specified when creating or updating via
rte_flow_action_handle* API.

Before using the DR action in a flow, the CT context should be
available to use in the hardware. A synchronization is done before
inserting the flow rule with CT action to check the HW availability
of this CT context.

In order to release the DR actions and reuse the context of a CT,
the reference count should also be handled in the flow rule
destroying.

The CT index will be recorded in the rte_flow by reusing the ASO age
index to save memory, since only one ASO action is supported in one
flow rule currently. The action context type should also be saved
for CT. When destroying a flow rule, if the context type is CT and
the index is valid (non-zero), the release process should be
handled. By default, the handling will fall back to try to release
the ASO age if any.

Signed-off-by: Bing Zhao <bingz@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>