Using subgraphs to create configurable bus nodes

[JorgeR81]

The Highway node, from Trung0246, it's probably the best Comfy UI bus node.
It's completely configurable via its text widget.
But the Trung0246 nodes are currently not working ( Trung0246/ComfyUI-0246#62 )

Other configurable bus nodes are also not working anymore, and no longer maintained. https://github.com/MaraScott/ComfyUI_MaraScott_Nodes

Simple bus nodes are still working, but they are too limited or too big, because all inputs and outputs are always visible.  

But now we can use a simple bus node and a subgraph to configure it in a more intuitive way !
Here I used a single rgthree context node inside each subgraph / "bus" node.

This is the subgraph / bus node placed before the KSampler.