For reusability of queries for developers.

Implies:

• a fetch alias like system
• possibility to use these named queries from templates using the out of the box list view, as provided in EZP-24144
• child locations query type
• bonus: last content or other query types to serve as example for content

TBD:

• Need for being able to provide dynamic parameters for use cases like sub items, for instance: parentId, offset, limitations and probably also being able to change order, sort and filter on type or name are features it will need in the future