function appendTile($target, $tile) {
	$target = $target.nextElementSibling;
	const $firstTile = $target.get(":scope>[type=file]");
	if ($firstTile) $target.insertBefore($tile, $firstTile);
	else $target.append($tile);
}
Insert a file into the list
@param {HTMLElement} $target
@param {HTMLElement} $tile