Support Balloon3D

[codefrau]

To make some old demos work (like Wonderland in Squeak 2.8) we need to support the Squeak3D plugin, and the B3DAcceleratorPlugin. The latter already exists in a rudimentary form in the Croquet Jasmin project. The former would have to be generated using VMMaker, which needs to be either updated, or used with a ca. 2014 VMMaker version.