Add include parameters to create and update methods of the routing client

[kszczek]

This PR adds include parameters to createNew, create and updateResource methods of the RoutingClient. This allows to see related resources of the newly created or updated resources.

According to the specification, there should be an option to include additional resources not only when fetching but also when updating or creating resources:

Note: This section applies to any endpoint that responds with primary data, regardless of the request type. For instance, a server could support the inclusion of related resources along with a POST request to create a resource or relationship.

[f3ath]

Thank you!