App for macOS 11+

• App is notarized by Apple
• App for Intel and Silicon
• Updated up to macOS Golden Gate
• Download Full Installer 11 lacks some Download Full Installer functionality:
  • Customizable download folder selection
  • Language system with selector
  • Legacy Mac OS X downloads
  • Updater system
  • The UI remains without "glass" effects, soft colors, or gradients
• Bump version to 2.5.5 (0185)
• DownloadFullInstaller-11-src.zip is the source code of this project