[scala] result code: either with some implicits

processRequestNew.scala

def processRequestNew(userId: UUID, requestId: UUID): BusinessResult = {
  for {
    user <- getUser(userId) orResult BusinessResult.UserNotFound
    request <- getRequestById(requestId) orResult BusinessResult.RequestNotFound
    _ <- checkAccess(request, user) orResult BusinessResult.NotOwner
  } yield BusinessResult.Ok
}