Suggestions for the updater sensor

I think the updater sensor should receive some upgrades:

  • the icon for the Update Available state should be something like mdi:alert-circle-check-outline alert-circle-check-outline or mdi:alert-decagram-outline alert-decagram-outline and the Up to date state icon should be the check mark instead

  • the notification trough the notifier should be enabled by default and not by adding an automation

  • the updater state icon should become yellow/orange if you are not updating in a while (maybe after skipping 3-5 major versions)