🪶 feat: Add Support for Azure OpenAI Base URL (#1596)

* refactor(extractBaseURL): add handling for all possible Cloudflare AI Gateway endpoints

* chore: added endpointoption todo for updating type and optimizing handling app-wide

* feat(azureUtils):
- `genAzureChatCompletion`: allow optional client pass to update azure property
- `constructAzureURL`: optionally replace placeholders for instance and deployment names of an azure baseURL
- add tests for module

* refactor(extractBaseURL): return entire input when cloudflare `azure-openai` suffix detected
- also add more tests for both construct and extract URL

* refactor(genAzureChatCompletion): only allow omitting instance name if baseURL is not set

* refactor(initializeClient): determine `reverseProxyUrl` based on endpoint (azure or openai)

* refactor: utitlize `constructAzureURL` when `AZURE_OPENAI_BASEURL` is set

* docs: update docs on `AZURE_OPENAI_BASEURL`

* fix(ci): update expected error message for `azureUtils` tests

docs/install/configuration/custom_config.md

@@ -4,6 +4,21 @@ description: Comprehensive guide for configuring the `librechat.yaml` file AKA t
 weight: -10
 ---
 
+<!-- # Table of Contents
+
+ - [Intro](#librechat-configuration-guide)
+    - [Setup](#setup)
+    - [Docker Setup](#docker-setup)
+    - [Config Structure](#config-structure)
+        - [1. Version](#1-version)
+        - [2. Cache Settings](#2-cache-settings)
+        - [3. Endpoints](#3-endpoints)
+            - [Endpoint Object Structure](#endpoint-object-structure)
+    - [Additional Notes](#additional-notes)
+    - [Default Parameters](#default-parameters)
+        - [Breakdown of Default Params](#breakdown-of-default-params)
+    - [Example Config](#example-config) -->
+
 # LibreChat Configuration Guide
 
 Welcome to the guide for configuring the **librechat.yaml** file in LibreChat.