Flicky 4.2.1

• Dhizuku impl.
• add izzy download stats (#53)
• Use material 3 expressive components
• Add author's applist screen, and chips that redirect to screens (for Categories (back) and Author)
• bump kotlin ver
• Add deeplinks support
• Use the material icons' share icon
• Fix variant not being shown as installed in versions
• Try to accurately resolve versions with the global preferred repo option (app specific overrides are unchanged)