Rename mean values.

.clangd

src/gpu/core/Calculation/Simulation.cpp

src/gpu/core/Calculation/UpdateGrid27.cpp

src/gpu/core/PostProcessor/CalcMean.cpp

src/gpu/core/PostProcessor/CalcMean.h

src/gpu/core/PostProcessor/Concentration.cu

src/gpu/core/PostProcessor/Concentration.cuh

src/gpu/core/PostProcessor/EnstrophyAnalyzer.cu

src/gpu/core/PostProcessor/ForceCalculations.cpp

src/gpu/core/PostProcessor/KineticEnergyAnalyzer.cu

src/gpu/core/PostProcessor/MacroscopicQuantities.cu

src/gpu/core/PostProcessor/MacroscopicQuantities.cuh

.../core/PreCollisionInteractor/Probes/PlanarAverageProbe.cu

src/gpu/core/PreProcessor/InitLattice.cpp