Begin of the insertionCurrently the representation/parsing of API resources is scattered over a number of representers and helper classes.

For WP there is e.g.:

- WorkPackageRepresenter
- WorkPackagePayloadRepresenter
- WorkPackageAttributeLinksRepresenter

For Query there is:

- QueryRepresenter
- QueryPayloadRepresenter
- QuerySerialization

The goal of the refactoring is to have a single representer for representation/parsing per resource:

- WorkPackageRepresenter
- QueryRepresenter

This change will reduce maintenance effort and increase the speed when implementing additional resources.End of the insertion