add dev distortion correction

zUtil_Python/pydct/dev/distortion-correction/.gitignore

...hon/pydct/dev/distortion-correction/affines-reduced.ipynb

zUtil_Python/pydct/dev/distortion-correction/affines.ipynb

...t/dev/distortion-correction/apply_distortion_map_numba.py

...distortion-correction/apply_distortion_map_pure_python.py

zUtil_Python/pydct/dev/distortion-correction/cfunc.ipynb

...istortion-correction/dct-correction-example-swapped.ipynb

...ct/dev/distortion-correction/dct-correction-example.ipynb

zUtil_Python/pydct/dev/distortion-correction/discorpy.ipynb

..._Python/pydct/dev/distortion-correction/launch_profile.sh