Prusa Simple Spool Mount (angled)

This is a simple spool mount that sits on top of a Prusa.

**UPDATED**

I added 2 more files:
1. stl with v2 suffix
2. skp with v2 suffix

Based on Maxinux's feedback - it was just a few mm from clearing properly with a 5lb spool. This mod should give the proper clearance.