Create a feature

Example request

{
  "feature": {
    "name": "New name",
    "workflow_kind": "new",
    "workflow_status": {
      "name": "Designed"
    },
    "description": "<p>This is the description</p>",
    "assigned_to_user": {
      "email": "no-reply@aha.io"
    }
  }
}