This PR introduces a new option to useMotion hook: duration
A Storybook documentation will be added in a follow-up PR.

Description

The idea is to have a hook that returns Motion with a predefined hardcoded duration, avoiding the need to compute the styles to infer the duration.
With the addition of this option, we enable the following:

• When duration is not provided (default), the hook will call a native browser API to compute the styles and determine the duration of a CSS Transition or Animation.
• When duration is provided, and it is higher than 0, the hook will skip the computation and use the duration to determine when a transition/animation will end.

Usage

const [open, setOpen] = React.useState(false);
const motion = useMotion(open, { duration: 300 });