Default sort by for resource

[krystof-k]

It would be great if it would be possible to set default sorting for a resource, for example something like:

  def fields
    field :created_at,
      as: :date_time,
      disabled: true,
      sortable: true,
      sort_by_default: :desc
  end

[adrianthedev]

Good idea! Moving it to issues.