Add configurable dismiss speed for toast animations

[angelprzz]

Hi!

I’m using react-native-toast-message in my Expo app, and I’ve noticed that when a toast is dismissed (either automatically or manually), the dismissal animation feels too fast. I’d love to have more control over the animation speed to better match the UX of my app.

Would it be possible to expose a parameter like dismissSpeed or animationDuration that lets us configure how fast the toast disappears?

Thank you!