Base Auto Endpoints: custom name for "page", "per_page", "order_by", "order_by_direction" arguments

It would be nice to be able to make these query argument names customizable.

Note the `search` field name can be overridden using `searchFieldName` already.

Start by locating the Base Auto Endpoints implementation and the existing searchFieldName customization. Trace where the page, per_page, order_by, and order_by_direction query arguments are defined and generated, then determine how those four names should be configured consistently. Done means each argument has a custom name without breaking the existing searchFieldName behavior.

Written by the indexing model from the issue text.