Remixed the vanilla Hextraction flipper with 6 openings, and a free-spinnning flipper.

Changes from the original:

• Removed slot in base for flipper stop
• Modified hex to have an opening on each side
• Removed peg stop from flipper
• Narrowed the flipper at the bottom so it doesn't collide with the first layer of the hex walls

Based on the flipper from the Hextraction Basic Tiles: https://thangs.com/designer/ZackFreedman/3d-model/Hextraction%20Basic%20Tiles-856511