[common] (datasets) refactor with builder paradigm

common/research/common/datasets_v3/__init__.py

common/research/common/datasets_v3/dataset.py

common/research/common/datasets_v3/dataset_builder.py

common/research/common/datasets_v3/filter_dataset.py

common/research/common/datasets_v3/image_dataset.py

...research/common/datasets_v3/image_file_dataset_builder.py

common/research/common/datasets_v3/lazy_dataset.py

common/research/common/datasets_v3/roco/__init__.py

common/research/common/datasets_v3/roco/roco_dataset.py

.../research/common/datasets_v3/roco/roco_dataset_builder.py

...search/common/datasets_v3/roco/roco_dataset_descriptor.py

common/research/common/datasets_v3/roco/roco_datasets.py

common/research/common/datasets_v3/roco/zoo/__init__.py

common/research/common/datasets_v3/roco/zoo/dji.py

common/research/common/datasets_v3/roco/zoo/dji_zoomed.py

.../research/common/datasets_v3/roco/zoo/roco_dataset_zoo.py

common/research/common/datasets_v3/roco/zoo/twitch.py

common/research/common/datasets_v3/transform_dataset.py

common/research/common/datasets_v3/union_dataset.py