Animation delays cause renders

This may not be actionable but logging this just so we can track it and potentially chat about workarounds.

# Issue

When animations are delayed they force flutter to re-render at 60fps even though nothing on screen is changing.

This is due to behavior built into Flutters `Ticker` object, which drives `AnimationController`, and `flutter_animate`s implementation of delays which rely on a long-running `AnimationController` that incorporates the duration of the delay into the total duration of an animation.

Each time Ticker ticks it schedules a new frame to be rendered.

# Reproduction
This can be reproduced with a repeating distractor like this, which will put the app into a state of constant endless re-rendering.
```dart
Widget build(BuildContext context) => MaterialApp(
home: Center(
child: FlutterLogo(size: 200)
.animate(
onPlay: (c) => c.repeat(),
)
.shimmer(delay: 2.seconds, duration: 1.seconds),
),
);
```

You can observe the app in a state of constant re-render here:

https://github.com/gskinner/flutter_animate/assets/736973/2e2f5674-6f28-4b26-ae59-d7bff78f6188

# Solution
One possible idea is to create a sub-class of Ticker that exposes a `bool scheduleFrame` param and can switch between a Timer based tick and a Sheduler based tick. Not sure how feasible this is, I can try and work on a proof of concept to prove viability, and then potentially we can request some tweaks to the Flutter SDK if required.