Centauri Carbon multi-material filament hub (4 color)

Remix of J_mason555s bowden tube mod and AdrianM's 4 in 1 filament hub to create a hub that attaches to the Centauri Carbon 1s filament run out sensor, allowing several filament lines - required for MMU setups.

Why would you need this? Well, with OpenCentauri's CosmOS we now have propper Klipper on the Centauri 1, this allows for MMU mods to be built. I'm working an addon for this firmware which allows it to communicate with Anycubics Ace Pro 1 for full multi color printing on the carbon.