Prop for animation speed

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Code of Conduct

- [X] I agree to follow this project's Code of Conduct

### Feature Request

```markdown
Hi, thank you for a great component!
Recently upgraded from v6 -> 8. Noticed that animation speed when changing a slide has been reduced
and figured I just need to set a new prop for that but couldn't find one.

Could we please get a prop that can change the animation speed?
Something like:

slideDuration: {number} in milliseconds

Br
```