Loose Cable Chain

This is a remix of the cable chain link from "Ender 3 Cable Chain" by jonniewhiskey.

I found the current cable chain links to be very tight and would require quite a bit of sanding to be able to move freely. This was also partly due to imperfections on my prints that prevented the pieces from moving that smoothly.

I created this remix with greater tolerances which would mean less effort in making the chain move easily.

###Changes:
- Moved each of the outer clamps further away by 0.5mm
- Made each protrusion longer by 0.25mm to compensate
- Shaved off parts that were coming to close to either the previous or next link by 0.5mm

The only point of contact between the links now would just be the protrusions and the holes, so only that would need to be smoothened out if needed.

The same link covers will work. These links will still clip onto the rest of the existing parts, though depending on which end of the chain that last link would be tighter or looser.