refactor: add errlog helpers to pkg

pkg/errlog.go

@@ -0,0 +1,18 @@
+package graphql
+
+import (
+	"io"
+	"log"
+)
+
+func Close(closer io.Closer, message string) {
+	if err := closer.Close(); err != nil {
+		log.Printf("%s: %v", message, err)
+	}
+}
+
+func Log(message string, err error) {
+	if err != nil {
+		log.Printf("%s: %v", message, err)
+	}
+}