Color and Stone Picker: animate on randomize

[cristovaoth]

This PR changes the behavior of the randomize buttons for both ColorPicker and StonePicker:

• Clicking the randomize button results, in an animation that gets previewed at each picker
• Only on animation end (onRest) the changes get propagated to app state -> the SVGPreview gets thus updated only when the animation is done

At code level this PR also refactors and consolidates hook code:

• Leave the original useDragRotate hook unchanged
• Create a new useRotateAnimate hook that handles only animation
• Create a hook called useDragRotateAnimate that coordinates the two above mentioned hooks, and provides a transparent api that is used by both StonePicker and ColorPicker

[cristovaoth]

@samepant great points. will adjust