RestartAR

• Added the /ar now command for immediate server restart.
• Added the /ar disablefeedback command to disable notifications for admins.
• Added the /ar scheduled command to display scheduled restarts.
• Fixed a permissions issue, now only players with the correct permissions can see admin notifications.
• Removed unused notifications from the code.
• Removed the %date% placeholder.
• Improved code structure and organization.
• Added support for setTabCompleter for better command auto-completion.

I wasn't able to finish the rest of the update yet, but a similar set of changes will be released later as version 1.9.1. As for what's coming after 1.9.1, I'm not sure yet. If you have any ideas or suggestions, feel free to reach out to me on Discord