New Benchmarks on DKRZ Levante HPC system, including benachmarks for alternative methods with own bfs and networkx graph search

Added possibility for calculation of 3d connected components to save memory by moving data onto cubulation only for single levels

Implement alternatives for computing 2d connected components based on self-programmed breadth first search (own-bfs) and breadth first search and graph construction by means of networkx library (networkx)