Add multi-IO reroute nodes about comfyui HOT 5 OPEN

I've had a look at implementing this as a custom Python node and ran into issues with allowing any types on inputs that forward the actual type to the corresponding output type.

This makes it impossible to implement this functionality as an extension in a way that is usable in different contexts. (This is one of the reasons ImpactPack has fixed type inputs.)

Looking at the code, the RerouteNode class in the JavaScript is a special node type with graph/type checking. It is doing the forwarding in the code. The RerouteNNode classes could be implemented by either generalizing the RerouteNode class, or as a class that contains N RerouteNode instances.

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Yes that would definitely need to be implemented in JavaScript rather than Python for the current codebase.

It would potentially make more sense as an extension than in the core - but could you explain why you want this / what benefit it would bring to workflow usage?

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The things in the use cases I listed above are things I'm considering on grouping.

I've been organizing the through data in workflows into data buses that move through the workflow. For example:

I'm looking at better ways of grouping these together. -- I'm not keen on the ImpactPack solution of a single pipe as you cannot easily add to the pipe or pull specific data off the pipe.

As a workaround I'm creating data-specific custom bus nodes for my workflow. For example:

Note: one potential issue is that the RerouteNode has an explicit check for the "Reroute" node when checking the connections, so it would be tricky implementing a generic solution as a plugin.

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For reference, I've created https://github.com/rhdunn/comfyui-bus-plugin which has a collection of these different node types that I'm finding useful in my own workflows. One advantage I've noticed with this approach is the ability to use the nodes as a grouped set of primitive nodes -- i.e. as an input group.

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Take a look at hits
https://github.com/Trung0246/ComfyUI-0246

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