volume + sbn schema stitching

volume.graphql

# in tower:

query {
  volumeProjects(communityId: 441, q: "Hillary") {
    name # from volume api
    contributorIds # from volume api, chorus user ids of the video's "contributors" (not sure if this is a thing, just an example)
    contributors {
      fullName # from sbn api, able to be efficiently resolved by batching multiple user-by-ids queries.
    }
  }
}