Draft: Add jobAnalytics GraphQL API to fetch data on our jobs

What does this MR do and why?

References

#541703 (closed)

Screenshots or screen recordings

Before	After

How to set up and validate locally

{
  jobAnalytics(
    query: {
      dimensions: [{column: "name"}, {column: "stage_id"}], 
      
      metrics: [{function: "avg", column: "duration", as: "medianDuration"}, {function: "quantile(0.95)", column: "duration", as: "p95Duration"}],
      
      filter: [{ column: "name", operator: "LIKE", value: "%job%" }]
    }
  
  ) {
    results
    sql
  }
}

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