Basic image gallery for macOS, with support for animated GIFs.
- Be document-based to support "Recently opened"
- Handle multiple windows
- Remove blank window when starting up and show open dialog instead
- Sidebar scroll to current image
- Show help popup using new kit
- Upgrade to new version of SwiftUI/AppKit: https://developer.apple.com/videos/play/wwdc2023/10148/
- Check accessibility: https://developer.apple.com/videos/play/wwdc2023-10035
- Get a new icon