Clockwork 2 Filament Runout Sensor

This is based on the current version of the CW2 (07.01.2022)

A remix of the SB filament runout sensor. I started from scratch and moved the trigger point as far away as possible to give klipper time to react to the runout.

Also compatible with a SB2040 board. Bend the pins of the microswitch and apply some electrical tape on top to prevent any shortages. To mount the switch just use your typical 2x10mm self tapping screws.

You'll need a 5mm steel ball for this mod.

V1.1:
Added build-in bridging support