Add a way to define a default query for the DataTableType

[alexandre-castelain]

Description

This Merge Request introduces documentation for handling the query option in DataTables. It explains how to define a default query within a DataTableType and how to override or extend it from a controller, providing flexibility similar to the Symfony Form component.

Default definition:

class ProductDataTableType extends AbstractDataTableType 
{
    public function getQuery(array $options): mixed
    {
        return $this->productRepository->createDefaultQueryBuilder();
    }
}

As soon as the getQuery method returns a value that can be handled by a class that implements ProxyQueryFactoryInterface, the code will work.

$dataTable = $this->createDataTable(ProductDataTableType::class);