[GA] Genotype - optimize for space usage

[swirszcz-adrian]

Currently genotype stores a list of vertices. This isn't necessarily a bad way to store data, but it is far from being space efficient - every Vertex contains both Vector2 holding position on screen and a full list of Edge objects. Therefore I'd suggest, that Genotype stores a list of indices instead, and gets all Vertex info from the reference to the original Graf object.

PLEASE make those changes on GA-algorithm-dev branch, cause I dont want to jump over three different branches, just to check for potential merges every time I open Visual Studio