Fix Header Handling for Azure-Specific Authorization

[Max-FM]

Description

This pull request fixes #161 by updating header management for Azure-specific authorization requirements in both the lib/modelHelpers.py and Images/ai-images.py files.

Changes

1. lib/modelHelpers.py:

   • Moved header setup: The Authorization and Content-Type headers were moved closer to the request execution.
   • Conditional logic for Azure endpoints: For Azure endpoints, the api-key header is used instead of Authorization. Non-Azure endpoints continue using the Authorization header.

2. Images/ai-images.py:

   • Modified header setup: Added conditional logic to handle the api-key header for Azure and Authorization for OpenAI.

Note

While the headers have been updated for Azure compatibility, image generation will still not function with Azure, as the endpoint remains hardcoded to OpenAI. A future PR will be required to support Azure image generation.

[C-Loftus]

Thanks! Don't worry too much about image generation (fine either way though!) unless you are using it and want it. I think it's more of a novelty; wasn't even sure if it worked with Azure hence the hardcoding.