Update benchmarks

.gitignore

apps/benchmarks/NonUniformGridCPU/CMakeLists.txt

apps/benchmarks/NonUniformGridCPU/GridGeneration.h

apps/benchmarks/NonUniformGridCPU/LdcSetup.h

apps/benchmarks/NonUniformGridCPU/NonUniformGridCPU.cpp

apps/benchmarks/NonUniformGridCPU/NonUniformGridCPU.py

.../benchmarks/NonUniformGridCPU/NonUniformGridGenerator.cpp

...s/NonUniformGridCPU/simulation_setup/benchmark_configs.py

apps/benchmarks/NonUniformGridGPU/CMakeLists.txt

apps/benchmarks/NonUniformGridGPU/GridGeneration.h

apps/benchmarks/NonUniformGridGPU/LdcSetup.h

apps/benchmarks/NonUniformGridGPU/NonUniformGridGPU.cpp

apps/benchmarks/NonUniformGridGPU/NonUniformGridGPU.py

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

apps/benchmarks/PhaseFieldAllenCahn/CMakeLists.txt

apps/benchmarks/PhaseFieldAllenCahn/benchmark.py

apps/benchmarks/PhaseFieldAllenCahn/benchmark_multiphase.cpp

apps/benchmarks/PhaseFieldAllenCahn/multiphase_codegen.py

apps/benchmarks/UniformGridCPU/CMakeLists.txt

apps/benchmarks/UniformGridCPU/UniformGridCPU.cpp