Finish benchmark setup

apps/benchmarks/NonUniformGridGPU/NonUniformGridGPU.cpp

...s/NonUniformGridGPU/simulation_setup/benchmark_configs.py

...arks/UniformGridGPU/simulation_setup/benchmark_configs.py

src/gpu/communication/NonUniformGPUScheme.h

src/lbm_generated/gpu/BasicRecursiveTimeStepGPU.h

src/lbm_generated/gpu/BasicRecursiveTimeStepGPU.impl.h