Add citations

I have added a parameter to the summary field:

    summary(
        withCitationsInText: Boolean
    ): String

With that set to true your summary text will have the citations embedded in brackets like

The Driving Test is a practical on-road test that focuses on your ability to perceive hazards and respond to them [2]. A Testing Officer assesses your driving skills, decision making, your awareness of other road users and how you share the road [1]. You will be notified of the result after the test [3]. The Driver Knowledge Test is the first step in getting your driver licence [2]. To sit the driving test and apply for your P1 licence, you'll need to pass the Hazard Perception Test first [2]. For heavy vehicle drivers, the test must be done in a vehicle appropriate to your licence type [3]. For a class MC licence, the driving test must be done in a HC vehicle type [3].

The numbers refer to the top search results in numeric order.

I have also added a new citationData field. A query might look like

  query Query($query: String!) {
    vertexAiSearchQuery(query: $query) {
      summary(withCitationsInText: true),
      citationData {
        startIndex
        endIndex
        referenceIndexes
      }
    }
  }

The citation data from the Vertex API has the capability to allocate more than one reference index to a citation so this is reflected in the query results:

After a chat with @nterbogt I've added proper resolvers for the citation data rather than letting it happen magically.

Automatically closed - issue fixed for 2 weeks with no activity.