Add default facets from Document Routing and the "task" schema

Now that Document Routing is part of Nuxeo 5.6, those facets Task and RoutingTask should be accessible in Studio to avoid adding them manually in its own Studio registries

{
facets:[
   
    {
     id : "Task",
     schemas: ["task"]
    },
    {
      id:  "RoutingTask"
    }
]}

Also the lifecycle "task" should be available in Studio.