Feat/aggregate query

[miladazhdehnia]

Hi there,

This update enables the usage of:

• Default selected fields when not using select method
• Aggregate query for all types of documents.
• Transformers
• Multiple query exec at once (not implemented yet)

I welcome any suggestions and feedback for a thorough review. Please ensure that you review the changes meticulously, as there might be some aspects that I might have inadvertently missed.

Thank you for your time and attention to this pull request! https://github.com/unbody-io/ts-client/issues/2

[miladazhdehnia]

@jeangovil About Multiple query exec at once what is the method arguments type? Because I have seen in Unbody GraphQL API that we can't query multiple documents of the same type. For example we can't query multiple google docs in a single GET query. Can you provide an example of how this method should works?

[jeangovil]

@jeangovil About Multiple query exec at once what is the method arguments type? Because I have seen in Unbody GraphQL API that we can't query multiple documents of the same type. For example we can't query multiple google docs in a single GET query. Can you provide an example of how this method should works?

Here's what I have in mind for the 'exec' method:

const query1 = unbody.get.googleDoc.select("originalName", "remoteId", "text")
const query2 = unbody.get.googleDoc.select("text")
const query3 = unbody.aggregate.googleDoc;

const [result1, result2, result3] = await unbody.exec(query1, query2, query3)

And, here's how you can execute multiple queries in a single GraphQL request:

query {
  q0: Get {
    GoogleDoc {
      originalName
      remoteId
      text
    }
  }
  q1: Get {
    TextBlock {
      text
    }
  }
  q2: Aggregate {
    GoogleDoc {
      meta {
        count
      }
    }
  }
}

It's also possible to execute multiple queries for the same type of object within a Get, or Aggregate query:

query {
    Get {
      a: GoogleDoc {
        originalName 
        remoteId
        text
      }
      b: GoogleDoc {
        originalName 
        remoteId
        text
      }
    }
  }