add custom script

scripts/curl_time

@@ -0,0 +1,13 @@
+#!/bin/bash -eu
+
+curl_time() {
+  curl -so /dev/null -w "\
+   namelookup:  %{time_namelookup}s\n\
+      connect:  %{time_connect}s\n\
+   appconnect:  %{time_appconnect}s\n\
+  pretransfer:  %{time_pretransfer}s\n\
+     redirect:  %{time_redirect}s\n\
+starttransfer:  %{time_starttransfer}s\n\
+-------------------------\n\
+        total:  %{time_total}s\n" "$@"
+}