Trident motor spacer / standoffs for leadscrew coupler V2

This is a V2 of my first version which still runs fine in my trident but adds a couple of QoL improvements

• smaller Z height so there is room to route cables below, also fits nicer with the feet
• capture nuts, no more dropping
• stronger
• has a flush cap that sits on the mount

Like the old it works with thrust bearing as there is a chance for the coupler to slip down and run on the motor flange.