Anet A8 Belt holder and spacer for level sensor

Added spacers to the original for the level sensor kit, such that it doesn't bend when screwed down.
If you want to use this, you will need a tensioner to get the tension right. If you use the original belt it might be too short for both this holder and a tensioner!
Measure the thickness of the belt doubled, such that the teeth intertwine.
My original anet belt measures 2.6mm and the GT2 belt 1.95mm. The files are for those thicknesses. Both were a *very* tight fit on my printer, so you might