fix package structure

.gitignore

docs/source/conf.py

docs/source/modules.rst

docs/source/src.bio_volumentations.augmentations.rst

docs/source/src.bio_volumentations.conversion.rst

docs/source/src.bio_volumentations.core.rst

src/bio_volumentations/__init__.py

src/bio_volumentations/augmentations/__init__.py

src/bio_volumentations/augmentations/functional.py

src/bio_volumentations/augmentations/sitk_utils.py

src/bio_volumentations/augmentations/transforms.py

src/bio_volumentations/augmentations/utils.py

src/bio_volumentations/biovol_typing.py

src/bio_volumentations/conversion/__init__.py

src/bio_volumentations/conversion/functional.py

src/bio_volumentations/conversion/transforms.py

src/bio_volumentations/core/__init__.py

src/bio_volumentations/core/composition.py

src/bio_volumentations/core/transforms_interface.py

src/bio_volumentations/napari_tools.py