[10.x] afterRawSearch callback

[gdebrauwer]

Typesense provides an option to get facet results. That facet info can be found underneath the 'facet_counts' key on the raw search response, next to the 'results' key. Currently, there is no easy way to access that extra search info (such as facet info) that is returned by the search engine. This PR provides an easy way access to access the full search result response returned by the search engine:

Product::search($request->query('q'))
    ->options(['facet_by' => 'category_ids'])
    ->afterRawSearch(function (array $result) {
        dump($result['facet_counts']); // access facet results
    })
    ->paginate();