MiaoMiao Holder

As I already have designed a [Nightrider Blucon Holder](/thing:2808297), I offered to also design a MiaoMiao Holder. Thank you to the gracious person how borrowed me her precious MiaoMiao for 10 days to have a testing sample, as I still wear the Blucon.

This holder keeps the MiaoMiao very firmly in it's frame, as I don't expect people to remove the frame from the MiaoMiao very often. The holder itself has some hooks, that will grab the libre in the gap between plaster and case. It can be easi