Feature request: Adding tiled diffusion upscaler for image 2 image and change location from dropdown script to always visible tab

[Kking1111]

I think it's a great idea to add this multi diffusion upscaler extension as an option. I am assuming it is possible because already control net tiling and ultimate sd upscalers are available optionally.

Also, it would be great to make this extension permanently visible, rather than to select from a dropdown menu of scripts. This will also allow it to be used with other scripts.