Added #

• Initial dev release of AnyPay Flutter package.
• PaymentUI for launching payment checkout screens.
• _CheckoutView for amount entry and payment initiation.
• _StatusView to show payment results (success, failure, pending).
• Customizable PaymentTheme:
  • Primary, success, failure colors.
  • Text style and border radius.
  • Icon size and animation duration.
• Animations for payment results:
  • Bounce animation for success/failure.
  • Rotating animation for pending.
• Example project with buttons to simulate success, failure, and pending states.
• Fully self-contained: no external dependencies for animations.