Name log fields, metrics and the Core Rule Set package for what they are (closes #192)

Log field, metric, action and event names now say what they count
and, for timings, the unit. Package internal/waf is internal/coreruleset.

Model: opus-5-5

internal/state/state.go

@@ -891,7 +891,7 @@ func missingFromCounter(counter anomaly.Counter) string {
 		return "netblock"
 	case scope == anomaly.ScopeASN && counter.ASN == "":
 		return "asn"
-	case scope == anomaly.ScopeWatch && counter.Name == "":
+	case scope == anomaly.ScopeWatchedNet && counter.Name == "":
 		return "name"
 	case countsWithoutStart(counter.Minute):
 		return "minute.start"