Add bounce animation to Android overlay (configurable height and duration) #168
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Adds optional up/down “bounce” animation to the Android overlay.
Fully controllable from Dart: enable/disable, height (dp), and duration (ms).
Animation pauses during drag and resumes after release.
usage in dart
await FlutterOverlayWindow.showOverlay(enableDrag: true,enableBounce: true,bounceHeight: 20, // dpbounceDuration: 1600, // ms per up and down full cycle 800 ms up / 800 ms down// other existing params...);