Conditional Lora API (ComfyUI as Backend)

Hello! I am trying to be able to insert one or more Loras using ComfyUI but it is not possible. Since it only accepts to change the values of the nodes and not the nodes themselves.

Wouldn't it be better if you could change the entire structure of the entire project with the API? Having these advantages:
1. **Have different implementations without the need to create new endpoints or ComfyUI instances**: Giving the virtue of only deploying once comfortable ui to the backend and the new implementations are modified from the web page
2. **Flexibility**: You can use, 1, 2, 3, n loras without having 5 meaningless implementations
3. **Replace Diffusers**: Diffusers is used essentially when someone deploys their model in replicate or banandev, but creating a new implementation is re-modifying the entire codebase, testing, and a lot of time consumed, if only you could modify the JSON file in it, ComfyUI could become the backend par excellence for Stable Diffusion

Related Issues #930