use time.Time in scrobbler interface

server/scrobble/scrobble.go

@@ -1,9 +1,11 @@
 package scrobble
 
 import (
+	"time"
+
 	"go.senan.xyz/gonic/server/db"
 )
 
 type Scrobbler interface {
-	Scrobble(user *db.User, track *db.Track, stampMili int, submission bool) error
+	Scrobble(user *db.User, track *db.Track, stamp time.Time, submission bool) error
 }