ProStruder filament guides

I've had ProStruders with Prometheus system for a while now and they work very well. However, sometimes when there's a filament jam or wrong feed sequence is triggered, the powerful steppers can push filament with such force that it 'spills' from the sides as the filament path is somewhat open. Also PTFE tubes aren't that rigid, making this problem bit worse.

So designed these filament guide parts. They replace following parts from the original ProStruder:
- 4x M3 Washers
- 3 Acrylic Tube Guides
- 8 Acrylic 7.5mm Washers
You can figure what to do with those if you decide to do this mod :).

Assembling (see https://www.distechautomation.com/pages/pro-sys-assembly#2.03):
- the lower guide part (has bolt hole through the side) needs to be inside the idle part. The bolt that mounts the idler to the motor needs to go through the idler and the guide part.
- after inserting the top assembly, slide the top guide part to the bolts (instead of the two original tube guide parts). For