Split Prometheus collector into own package

cmd/nut_exporter/main.go

@@ -3,14 +3,14 @@ package main
 import (
 	"net/http"
 
-	"honnef.co/go/nut"
+	"honnef.co/go/nut/nutcollector"
 
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
 func main() {
-	c := nut.NewCollector([]string{"localhost"})
+	c := nutcollector.New([]string{"localhost"})
 	prometheus.MustRegister(c)
 	http.Handle("/metrics", promhttp.Handler())
 	http.ListenAndServe(":9999", nil)