Split out image generation function

[justinh-rahb]

Summary

Introduced a new utility function, generate_image, to abstract the OpenAI image generation process.

Description

To enhance code clarity and provide a better abstraction, we've encapsulated the openai.Image.create method in a dedicated function named generate_image. This function simplifies the process of generating images using OpenAI's Image API and can be extended or modified more easily in the future.

Related Issue(s)

#47

Motivation and Context

• Abstraction: By wrapping the openai.Image.create method, we provide a clearer interface for image generation, abstracting away the specific OpenAI details.
• Maintainability: In the future, if there are changes or updates to the way we interact with the OpenAI Image API, we'll only need to update our utility function, preventing widespread changes throughout the codebase.
• Scalability: The function can be extended to include more parameters or functionalities, such as error handling or logging, without affecting its callers.

Types of changes

What types of changes does your code introduce? Put an x in all the boxes that apply:

• New feature (non-breaking change which adds functionality)

Checklist:

Go over all the following points, and put an x in all the boxes that apply. If you're unsure about any of these, don't hesitate to ask. We're here to help!

• My code follows the code style of this project.
• I have read the CONTRIBUTING document.