Adaption for CodeGen pipeline

.gitignore

.gitlab-ci.yml

...marks/FlowAroundSphereCodeGen/FlowAroundSphereCodeGen.cpp

...hmarks/FlowAroundSphereCodeGen/FlowAroundSphereCodeGen.py

apps/benchmarks/FluidParticleCoupling/GeneratedLBM.py

...benchmarks/FluidParticleCoupling/GeneratedLBMWithForce.py

apps/benchmarks/PhaseFieldAllenCahn/benchmark_multiphase.cpp

apps/benchmarks/PhaseFieldAllenCahn/multiphase_codegen.py

apps/benchmarks/UniformGridCPU/UniformGridCPU.cpp

apps/benchmarks/UniformGridCPU/UniformGridCPU.py

apps/benchmarks/UniformGridGPU/UniformGridGPU.cpp

apps/benchmarks/UniformGridGPU/UniformGridGPU.py

apps/benchmarks/UniformGridGPU/old_ideas/UniformGridGPU.py

...howcases/PhaseFieldAllenCahn/CPU/InitializerFunctions.cpp

apps/showcases/PhaseFieldAllenCahn/CPU/multiphase.cpp

apps/showcases/PhaseFieldAllenCahn/CPU/multiphase_codegen.py

...howcases/PhaseFieldAllenCahn/GPU/InitializerFunctions.cpp

apps/showcases/PhaseFieldAllenCahn/GPU/multiphase.cpp

apps/showcases/PhaseFieldAllenCahn/GPU/multiphase_codegen.py

apps/showcases/PhaseFieldAllenCahn/GPU/util.cpp