Remove code from original repo, small refactoring and packaging

Closes #8 (closed)

Closes #6 (closed)

Datasets/dataset_formatters/generic_dataset_formatter.py

-#  Copyright Université de Rouen Normandie (1), INSA Rouen (2),
-#  tutelles du laboratoire LITIS (1 et 2)
-#  contributors :
-#  - Denis Coquenet
-#
-#
-#  This software is a computer program written in Python  whose purpose is to
-#  provide public implementation of deep learning works, in pytorch.
-#
-#  This software is governed by the CeCILL-C license under French law and
-#  abiding by the rules of distribution of free software.  You can  use,
-#  modify and/ or redistribute the software under the terms of the CeCILL-C
-#  license as circulated by CEA, CNRS and INRIA at the following URL
-#  "http://www.cecill.info".
-#
-#  As a counterpart to the access to the source code and  rights to copy,
-#  modify and redistribute granted by the license, users are provided only
-#  with a limited warranty  and the software's author,  the holder of the
-#  economic rights,  and the successive licensors  have only  limited
-#  liability.
-#
-#  In this respect, the user's attention is drawn to the risks associated
-#  with loading,  using,  modifying and/or developing or reproducing the
-#  software by the user in light of its specific status of free software,
-#  that may mean  that it is complicated to manipulate,  and  that  also
-#  therefore means  that it is reserved for developers  and  experienced
-#  professionals having in-depth computer knowledge. Users are therefore
-#  encouraged to load and test the software's suitability as regards their
-#  requirements in conditions enabling the security of their systems and/or
-#  data to be ensured and,  more generally, to use and operate it in the
-#  same conditions as regards security.
-#
-#  The fact that you are presently reading this means that you have had
-#  knowledge of the CeCILL-C license and that you accept its terms.
-
 import os
 import shutil
 import tarfile