[RFC]: OpenAI Image Edit API Interface for ComfyUI

### Feature Idea

Motivation.
While ComfyUI supports local inpainting and OpenAI text-to-image, it lacks a native or well-standardized way to leverage OpenAI's cloud-based editing. Users currently have to write custom scripts or use fragmented third-party nodes. Adding this enables:

Proposed Change.
Propose the implementation of a standardized node and backend interface to support the OpenAI v1/images/edit endpoint. This will allow users to perform prompt-based image editing (inpainting and outpainting) using DALL-E 2 or GPT-Image models directly within ComfyUI workflows.

High-quality inpainting for users without powerful local GPUs.

Consistency with the existing OpenAI T2I implementation.

Hybrid Workflows: Using local Stable Diffusion for base generation and DALL-E/GPT-Image for final "magic" edits.

### Existing Solutions

_No response_

### Other

I am a contributor for vllm-omni and would like to help with this integration. Comfyui as frontend and vllm-omni as backend would be a great combination.