useMediaSrc

I've been using a variation of the following to convert an attachment ID to a URL:

```

function useMediaSrc( id ) {
	const url = useSelect(
		( select ) => {
			const media = select( 'core' ).getMedia( id, { context: 'view' } );
			if ( ! media ) {
				return undefined;
			}
			return media.source_url;
		},
		[ id ]
	);
	return url;
}
```

It'd be good to have this in the hooks available