Support to identify Internal IP Information

[ehsandeep]

Please describe your feature request:

Boolean field to include in the default JSON output to indicate if resolved IP is internal or not, ranges of internal IP can be obtained from https://datatracker.ietf.org/doc/html/rfc5735

echo google.com | dnsx -json

{
  "host": "google.com",
  "resolver": [
    "8.8.8.8:53"
  ],
  "a": [
    "142.250.192.14"
  ],
  "status_code": "NOERROR",
+  "internal": false
  "timestamp": "2022-01-13T13:06:43.081861+05:30"
}

echo dmyx.com | dnsx -json

{
  "host": "dmyx.com",
  "resolver": [
    "8.8.8.8:53"
  ],
  "a": [
    "127.0.0.1"
  ],
  "status_code": "NOERROR",
+  "internal": true
  "timestamp": "2022-01-13T13:56:10.324053+05:30"
}

Requested by breno_css#8797