[management] network map from nmap data type (#6919)

Signed-off-by: Dmitri Dolguikh <dmitri.external@netbird.io>
Co-authored-by: Dmitri Dolguikh <dmitri.external@netbird.io>

shared/management/networkmap/nmdata/dns.go

@@ -0,0 +1,18 @@
+package nmdata
+
+// SimpleRecord is the slim twin of dns.SimpleRecord.
+type SimpleRecord struct {
+	Name  string
+	Type  int
+	Class string
+	TTL   int
+	RData string
+}
+
+// CustomZone is the slim twin of dns.CustomZone.
+type CustomZone struct {
+	Domain               string
+	Records              []SimpleRecord
+	SearchDomainDisabled bool
+	NonAuthoritative     bool
+}