align method
Adds an AlignEffect that animates the target between the specified
begin and end alignments (via Align).
Implementation
T align({
  Duration? delay,
  Duration? duration,
  Curve? curve,
  Alignment? begin,
  Alignment? end,
}) =>
    addEffect(AlignEffect(
      delay: delay,
      duration: duration,
      curve: curve,
      begin: begin,
      end: end,
    ));