Retrieve rcodes and qtypes per zone

It will be interesting to retrieve the data from the json, building an struct with [] to gather the data as it is an array of dicts.

It's is important the format of the Prometheus output, it will be also interesting to have something similar to:

bind_zones_queries_total{type="A", zone="example.com,"view="_default"} 91
bind_zones_queries_total{type="CNAME",zone="example.com,"view="_default"} 32
bind_zones_queries_total{type="A", zone="example3.com,"view="_default"} 3
bind_zones_queries_total{type="CNAME",zone="example3.com,"view="_default"} 22

Thanks!!