Update Struphy to latest pyccel version 1.5.0
- Replaced type decorators in pyccelized functions with type declaration in list of arguments to accomodate for pyccel version 1.5.0.
- Updated OpenMP pragmas
- Removed redundant function calls in mappings_3d.py, pullback_3d.py, pushforward_3d.py and transform_3d.py to speed up pyccelization.