[Feat] Support for Azure OpenAI endpoints

[Asimov4]

Problem Description
I would like to be able to use Extract with an Azure OpenAI endpoint.

Proposed Feature
It would be nice to have the ability to configure an alternative set of keys for Azure.

[Asimov4]

Actually, I was able to get extract working seamlessly on a fork. All I had to do was replace this:

import OpenAI from "openai";

const openai = new OpenAI();

With this everywhere:

import { AzureOpenAI } from "openai";

const openai = new AzureOpenAI({
  apiKey: process.env.AZURE_OPENAI_CREDENTIAL,
  endpoint: process.env.AZURE_OPENAI_ENDPOINT,
  apiVersion: process.env.AZURE_OPENAI_VERSION,
});

[hqman]

I also need this feature.