TPU Inserts for BL X1C Ventilation from Marwyn

This is a TPU addition to Marwyn's ventilation model. It adds Hex TPU inserts that go in the holes. And a flat TPU insert for the covers. 

The covers have two options, one normal flat, the other is tapered.

Make sure that the Hex inserts protrude  just a bit to have enough pressure when the cover is put over but not too much that the magnets can't pull it back in place