Ultralytics Refactor https://ultralytics.com/actions (#13553)

* Refactor code for speed and clarity

* Auto-format by https://ultralytics.com/actions

* Update README.md

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

---------

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: UltralyticsAssistant <web@ultralytics.com>

utils/aws/userdata.sh

@@ -1,4 +1,6 @@
 #!/bin/bash
+# Ultralytics 🚀 AGPL-3.0 License - https://ultralytics.com/license
+
 # AWS EC2 instance startup script https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/user-data.html
 # This script will run only once on first instance start (for a re-start script see mime.sh)
 # /home/ubuntu (ubuntu) or /home/ec2-user (amazon-linux) is working dir