Function attachOnResize

attachOnResize(
element: Element,
callback: OnResizeCallback,
): { element: Element; resizeObserver: ResizeObserver }
A function that attaches a ResizeObserver to any given element, so it is very efficient.
Parameters
- element: Element
- callback: OnResizeCallback
Returns { element: Element; resizeObserver: ResizeObserver }
Example
```
import {html, defineElement, attachOnResize} from 'element-vir';

const MyElement = defineElement()({
    tagName: 'my-element',
    render({host}) {
        attachOnResize(host, (size, element) => {
            console.log('resized!', element, size);
        });

        return '';
    },
});
```
- Defined in packages/element-vir/src/declarative-element/directives/on-resize.directive.ts:131