Framework for scaffold geometry optimization - second method

[Richard-Olsen-75]

This will add a framework for scaffold geometry optimization. In this framework new optimizations can be implemented by adding them to the ScaffoldOptimizer class. The trigger of the optimization is not handled by the framework, but directly inside the ScaffoldOptimizer class. Assignment of new instance IDs to split mesh parts is done by the framework, based on the indices assigned to each sub-part of the splitting procedure. The framework allows optimization of meshes that result in any combination of instance meshes, triangle meshes, as well as non-mesh template primitives.

[Strepto]

Works for me, lets try this variant