GraphQL Result Proxy

This module provides a Proxy implementation that takes the result of a graphql
execution and produces a version that will throw errors when the key that are
located at is accessed.

For example:

``js
const { execute } = require('graphql')
const { createResultProxy } = require('graphql-result-proxy')

const exampleFn = async () => {
const result = await execute(/ args here /)
// Let's assume this request is of the form
// query {
// getItem {
// keyA
// keyB
// }
// }
// And that there is an error localized to getItem.keyB

const data = createResultProxy(result)

// This returns the value of keyA
console.log(data.getItem.keyA)

// This would throw the error at keyB
console.log(data.getItem.keyB)

// This would throw an error that keyC was not in the original graphql request
console.log(data.getItem.keyC)
}
``