[Request] Background Remover

URL:https://github.com/AUTOMATIC1111/stable-diffusion-webui-rembg
It can be remove generated picture's background.
It will very useful as ps plugin. #176

The issue references an external rembg plugin for background removal. Look at how other features integrate with Photoshop and the backend (Automatic1111/ComfyUI). Start by examining the plugin's existing architecture for adding new tools, then see how to call the rembg service or library. Check for similar integrations in the codebase to understand the pattern.

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