Support jq syntax for response postprocessing

[Totktonada]

Example:

$ echo box.info | ./tt connect localhost:3301 | yq -c '.[] | {"instance_uuid": .uuid, "replicaset_uuid": .cluster.uuid}'
{"instance_uuid":"84560a97-1cba-4e24-8814-d49fa1f9d6a5","replicaset_uuid":"f5ef1167-2920-4303-97de-25c8ed6ffac4"}

We can integrate yq functionality into tt itself.

The idea from @Mons.