[feature request] ability to attach example workflow to node

Hello

I've recently started using ComfyUI and I am impressed by it

Long time ago I've been user of another node-based software called vvvv: https://visualprogramming.net/
One thing I really liked there was that each node could have an associated workflow with it which usually explained all parameters and did show how to use it properly.

https://youtu.be/7m1EzfxUtzo?list=PL2KeRstDQVRRVnzCHEambwAI4yWmpIF-p&t=324 - you can see example of it there

It would be cool to support it in ComfyUI too. Right now the blocker for it I believe is lack of tabs support or something like that - so some way to switch between workflows

But as first implementation I wouldn't really mind if this will be destructive i.e. you add node, press F1 and get a dialog: "Clear current workflow and open example for node KSampler instead?"

This will encourage custom node creators to document their nodes more and in the end this will boost the whole ecosystem of ComfyUI a lot

It feels like this feature should be somewhat easy to implement since ComfyUI already supports of saving the whole workflow into json or image file