C++: moved petsird/helpers include files to petsird_helpers

Author: KrisThielemans

…helpers/include/petsird/helpers/create.h …helpers/include/petsird_helpers/create.hcpp/helpers/include/petsird/helpers/create.h renamed to cpp/helpers/include/petsird_helpers/create.h cpp/helpers/include/petsird/helpers/create.h renamed to cpp/helpers/include/petsird_helpers/create.h

@@ -16,7 +16,7 @@ using petsird::hdf5::PETSIRDReader;
 using petsird::binary::PETSIRDReader;
 #endif
 #include "petsird_helpers.h"
-#include "petsird/helpers/geometry.h"
+#include "petsird_helpers/geometry.h"
 #include <xtensor/xview.hpp>
 #include <xtensor/xio.hpp>
 #include <iostream>

…lpers/include/petsird/helpers/geometry.h …lpers/include/petsird_helpers/geometry.hcpp/helpers/include/petsird/helpers/geometry.h renamed to cpp/helpers/include/petsird_helpers/geometry.h cpp/helpers/include/petsird/helpers/geometry.h renamed to cpp/helpers/include/petsird_helpers/geometry.h

@@ -22,7 +22,7 @@ using petsird::binary::PETSIRDWriter;
 #endif
 
 #include "petsird_helpers.h"
-#include "petsird/helpers/create.h"
+#include "petsird_helpers/create.h"
 
 // these are constants for now
 constexpr uint32_t NUMBER_OF_EVENT_ENERGY_BINS = 3;