Ender 3 S1 runout sensor bracket

## Summary
An alternative holder for the runout sensor of the ender 3 s1.
The cable guide must be removed to have enough cable length. Don't worry, the cable guide is only clipped.

## Improvement
The arm was made longer and stronger compared to the remix. Furthermore, the slot for the M3 nut was added back from the original.

## Required parts
• (1) M3 nut