[GPU] Fix typo, in Probe.cu we used "part" instead of "Part", which results in failing regression tests.

shift KernelUtilities.h + ScalingHelperFuncitons.h + ChimeraTransformation.h to a new location;
do some refactoring

change the datatype of the variable numberOfNodes aka numberOfLBnodes (fka size_Mat) to unsigned long long ... with respect to large grids (>100e^6 Nodes per Level) ... in this regard the 27 directions are changed to size_t and some control variables are also changed to size_t