Implement a hook useClickOutside(ref, callback) that detects clicks outside of a specified element.

The hook should:

• Accept a reference to an HTML element and a callback function.
• Call the callback when a click happens outside the referenced element.
• Ensure the event listener is properly cleaned up when the component unmounts.

Example

const ref = useRef(null);
useClickOutside(ref, () => {
  console.log("Clicked outside!");
});