Missing type casting

[asgraf]

The \Muffin\Webservice\Datasource\Marshaller currently ignores the existence of /src/Model/Endpoint/Schema/****Schema classes, does not build a property map, and never calls TypeInterface::marshal()

Additionally \Muffin\Webservice\Webservice\Webservice::_transformResource() never calls TypeInterface::toPHP()

Tested on version 3.0.0

[asgraf]

Optionally \Muffin\Webservice\Webservice\Webservice::_transformResource could also call TypeInterface::marshal() instead of TypeInterface::toPHP()