Add Sleepr

[welcoMattic]

Types of Changes

What types of changes does your PR introduce? Put an x in all boxes that apply

• New addition to list
• Fixing bug in existing item in list
• Removing item from list
• Changing structure (organization) of list

Proposed Changes

Sleepr is a menu bar app for macOS Ventura+ that brings back the sleep timer removed by Aplle since Ventura. Pure Swift/SwiftUI app. Free voucher on demand to be accepted on the list

PR Checklist

Put an x in the boxes once you've completed each step. You can also fill these out after creating the PR. If you're unsure about any of them, don't hesitate to ask. We're here to help! This is simply a reminder of what we are going to look for before merging your code.

• I have read the CONTRIBUTING guide
• I have explained why this PR is important
• I have added necessary documentation (if appropriate)

[welcoMattic]

Hi! Any chance to get a review on my PR?
Thanks ;)

[jaywcjlove]

This app may not look very "awesome", but seeing that it's developed by an individual, I support it and have merged the changes. @welcoMattic