Add Azure Open AI Provider selection to the UI

[maxim-saplin]

Validations

• [X] I believe this is a way to improve. I'll try to join the Continue Discord for questions
• [X] I'm not able to find an open issue that requests the same enhancement

Problem

There's no button/card for "Azure OpenAI" provider when adding a new model. Azure is probably one of the most (if not the most) popular options for OpenAI GPT3/4 API consumption among developers (due to MSDN subscription consumption and/or Azure popularity in enterprises). No special card creates friction, it took me some time to discover this manual on configuring Azure GPT4 endpoint via JSON.

Solution

Make Azure Open AI models first class citizens by adding the configuration flow to the UI (VSCode, JB).

I can work on the PR.

[sestinj]

@maxim-saplin I'd be very open to this PR! The most relevant file to change is modelData.ts