Proposal: Replacing aiohttp with FastAPI in ComfyUI Backend

[bigcat88]

Would you be open to accepting a pull request that replaces aiohttp with FastAPI?

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We recently completed implementing our HTTP/1.1 API in Visionatrix to handle tasks for ComfyUI, but we still need to retain the original ComfyUI frontend interface.

Since we're using FastAPI, it's not straightforward to integrate ComfyUI's endpoints into our project without reimplementing them from scratch.

While I'm confident I could reimplement the endpoints myself, and they would likely maintain full backward compatibility with the original aiohttp endpoints, it would be far more convenient to avoid doing this in our own repository. Constantly syncing backend changes from ComfyUI would be cumbersome. Instead, it would be ideal to submit a PR to this repository, replacing aiohttp with FastAPI.

With that change, we could simply import the routes into our project, making everything seamless and easy to manage.

So, my question for you, @comfyanonymous, @mcmonkey4eva, is: would you consider accepting a PR that replaces aiohttp with FastAPI if it will retain backward compatibility with current endpoints?

Thank you in advance for your consideration, no matter the response!