TwistyPuzzleLib

First stage of the planned split of the giant TwistyObject class into (at first!) two: TwistyObjectTheoretical (a 'theoretical' object which moves just like the real one, but which has no mesh, stickers, shapes, node and cannot be controlled) and everything else.

Come back to the old, 3-way solved state detection.

debugging the new 'surfaces' thing.

Further abstractions in the 'detect solved state' engine.

It should now be able to work in all cases - but it is still buggy (Dino4 does not work now!)

Fix solved state of the 4x4 Penrose Cube.

UPgrade firebase BOM to the version which supports sessions.

Minor

New 3-layered Cheese, its mesh, its object json.
TODO: tutorials & extras json.

Penrose Cubes: new meshes & jsons.

Fix for the solved state detection of the Penr3 and Penr4.