Is your feature request related to a problem? Please describe.

There is no way to get the total number of post from the PostQuery object which forces users to write things like this :

$query = new WP_Query([
    'cat'            => $category->id,
    'post__not_in'   => get_option('sticky_posts'),
    'posts_per_page' => $context['offset']
]);
$context['posts'] = new PostQuery($query);
$context['found'] = $query->found_posts;

Describe the solution you’d like

A method (total() or found()) on PostQuery to get the total number of post found.

Questions

Is there a reason why this feature is not implemented ? I may be able to submit a PR to implement this myself but I want to know if there was a reason for not including this in the PostQuery class.

Thanks