Add preventScroll to useFocusLock options

[mcsmcs]

Scenario
We're leveraging popper.js (specifically react-popper) to position different dialogs (Callout, Menus, etc) and focus-layers to trap focus within those dialogs.

When .focus() is called most browsers will attempt to scroll the element into view. The unfortunate part is that popper.js starts with position: absolute; top: 0; left: 0; and then in a subsequent render cycle applies a transform to position the element correctly.

When focus-layers calls .focus the element hasn't always made it to the correct position. Depending on the use case the top/left: 0 could be hundreds of pixels above the final placement causing the scroll to take the focus-lock'ed element completely off the screen.

Ask
The focus() method takes a preventScroll option that prevents the scrolling. Can useFocusLock options accept an option to control preventScroll?

Other
Version: focus-layers@0.6.1
https://developer.mozilla.org/en-US/docs/Web/API/HTMLOrForeignElement/focus