[common] (ImagePerturbator) Move from runes to common code

common/research/common/dataset/perturbations/__init__.py

...research/common/dataset/perturbations/examples/.gitignore

...n/research/common/dataset/perturbations/examples/test.png

.../common/dataset/perturbations/image_modifiers/__init__.py

...ommon/dataset/perturbations/image_modifiers/brightness.py

.../common/dataset/perturbations/image_modifiers/contrast.py

...on/dataset/perturbations/image_modifiers/gaussian_blur.py

...n/dataset/perturbations/image_modifiers/gaussian_noise.py

.../dataset/perturbations/image_modifiers/horizontal_blur.py

...taset/perturbations/image_modifiers/image_modifier_abc.py

...ommon/dataset/perturbations/image_modifiers/saturation.py

common/research/common/dataset/perturbations/perturbator.py

common/research/common/dataset/perturbations/utils.py

...nes/research/robots_at_runes/dataset/dataset_generator.py