MarkLogic retrieve range element index

For query optimization, we need to know during query creation if the queried field has a range element index or not.
Use the repository configuration to give to Nuxeo which elements have a range element index on a specific type.

Then we can replace cts:element-value-query by cts:element-range-query for equal comparison.

Configuration will look like:

      <range-element-indexes>
        <range-element-index type="string">ecm:id</range-element-index>
      </range-element-indexes>