Add MCP server to integrate with Stability AI's image models

[tadasant]

Description

An MCP server that integrates Stability AI's image generation and manipulation capabilities for editing, upscaling, and more via Stable Diffusion models.

Server Details

README on the repository is pretty thorough, but here's a snippet of the tools:

Tool Name	Description
generate-image	Generate a high quality image of anything based on a provided prompt & other optional parameters.
remove-background	Remove the background from an image.
outpaint	Extend an image in any direction while maintaining visual consistency.
search-and-replace	Replace objects or elements in an image by describing what to replace and what to replace it with.
upscale-fast	Enhance image resolution by 4x.
upscale-creative	Enhance image resolution up to 4K.
control-sketch	Translate hand-drawn sketch to production-grade image.