Expose property modification to frontend

[space-nuko]

In Max you have the ability to add an attribute as an input slot through the properties panel. For example to toggle visibility on and off. The same should be possible in ComfyBox

And for that matter, exposing the raw value of any arbitrary widget as an input/output parameter. So you can have a toggle that

• links together more than one set of sliders, like Lora strength
• hides and shows the correct sliders depending on checked state
• sets the input slots to the output values of the correct widgets only if it's enabled

Have to be very careful as widget names are assumed to be unique for the purposes of serialization

[space-nuko]

I opted for an action that toggles on/off a group of nodes. Reduces the number of wires needed for complex state changes.