Flashforge Creator Pro 2016 bowden mount bracket

When starting to print out the parts for the [flashforge bowden conversion](https://www.thingiverse.com/thing:948471) by @bookmake I found out the extruder motor mounts aren't compatible with the 2016 version, at least not mine, as it doesn't have the same holes to bolt the mount. I created this bracket to slide into the guide tube clips which the extruder motor mounts can be bolted to using m3 bolts/nuts.