Update python coupling

.gitignore

CMakeLists.txt

apps/benchmarks/FlowAroundSphereCodeGen/CMakeLists.txt

apps/benchmarks/PhaseFieldAllenCahn/CMakeLists.txt

apps/benchmarks/UniformGridGPU/CMakeLists.txt

apps/benchmarks/UniformGridGenerated/CMakeLists.txt

apps/pythonmodule/CMakeLists.txt

apps/showcases/PhaseFieldAllenCahn/CPU/CMakeLists.txt

apps/showcases/PhaseFieldAllenCahn/GPU/CMakeLists.txt

cmake/waLBerlaHelperFunctions.cmake

extern/pybind11

src/python_coupling/CMakeLists.txt

src/python_coupling/DictWrapper.h

src/python_coupling/Manager.cpp

src/python_coupling/PythonCallback.cpp

src/python_coupling/PythonCallback.h

src/python_coupling/PythonWrapper.h

src/python_coupling/export/BasicExport.cpp

tests/python_coupling/CMakeLists.txt

tests/python_coupling/CallbackTest.cpp