Support Arkindex datasets for dataset extraction

README.md

atr_data_generator/extract/__init__.py

atr_data_generator/extract/arguments.py

atr_data_generator/extract/base.py

atr_data_generator/extract/db.py

atr_data_generator/extract/pylaia/main.py

atr_data_generator/split/__init__.py

atr_data_generator/split/arguments.py

atr_data_generator/utils.py

docs/extract/configuration.md

docs/ref/split/arguments.md

examples/extraction.yml

examples/split.yml

mkdocs.yml

tests/conftest.py

tests/data/pylaia/corpus_lm.txt

tests/data/pylaia/train.txt

tests/data/pylaia/train_ids.txt

tests/data/pylaia/train_no_space.txt

tests/data/pylaia/val.txt