Anet A8 Optical Z Probe (mirrored & compatible with x-axis chain)

**Note:** Technically this is still a work in progress, there are still issues that bugs me (described below), but I'm moving on to [Tiny Touch](https://www.thingiverse.com/thing:3833861). I still post this for people are in my situation.

This is mirrored of the [original](https://www.thingiverse.com/thing:2805327), and I fused it with my [x-axis chain carrier](https://www.thingiverse.com/thing:3825535). Because I have a clone E3D V6 on the way, I'd like to design something that'll fit both c