[5.6] Allowing passing arrays to JsonResource

[SjorsO]

It can be useful to use the JsonResource class for one-off api routes instead of having to create a new resource class. This already works for collections, but it won't work with arrays. This PR adds the ability to pass an array to JsonResource::make().

example:

public function index()
{
    $array = $this->getData();

    return JsonResource::make($array);    
}