Add support for Comfy-Spaces

[softyoda]

Proposal

A lot of users are like me, workstation in headless to avoid noisy room, confyui in browser, want to install new workflow, missing nodes is ez to fix, but missing model is pain in the ass to manually download and copy past each models vae and whatever subfolder they wish to be put all of them individually...

Some others also complained :

Some other user found a way to fix all those issues : It's called Comfy-Spaces it fix both automatic download and sorting in right directory, as well as dependency graph automatic resolve.

It would be nice if stability matrix offered a way to migrate current default comfyui to this new confy-space, it would allow us to in one click try json without spending hours just to babbeling little models in their little boxes of directory, or spending tokens on an agent that't do the same thing, just to discover that the model is garbage and get bored of comfyui.