Remove code from original repo, small refactoring and packaging

Closes #8 (closed)

Closes #6 (closed)

Datasets/dataset_formatters/extraction_utils/utils.py

-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-
-"""
-    The utils module
-    ======================
-"""
-
-import argparse
-
-def get_cli_args():
-    """
-    Get the command-line arguments.
-    :return: The command-line arguments.
-    """
-    parser = argparse.ArgumentParser(
-        description="Arkindex DAN Training Label Generation"
-    )
-
-    # Required arguments.
-    parser.add_argument(
-        "--corpus",
-        type=str,
-        help="Name of the corpus from which the data will be retrieved.",
-        required=True,
-    )
-    parser.add_argument(
-        "--element-type",
-        nargs="+",
-        type=str,
-        help="Type of elements to retrieve",
-        required=True,
-    )
-    parser.add_argument(
-        "--parents-types",
-        nargs="+",
-        type=str,
-        help="Type of parents of the elements.",
-        required=True,
-    )
-    parser.add_argument(
-        "--output-dir",
-        type=str,
-        help="Path to the output directory.",
-        required=True,
-    )
-
-    # Optional arguments.
-    parser.add_argument(
-        "--parents-names",
-        nargs="+",
-        type=str,
-        help="Names of parents of the elements.",
-        default=None,
-    )
-    parser.add_argument(
-        "--no-entities",
-        action="store_true",
-        help="Extract text without entities")
-
-    parser.add_argument(
-        "--use-existing-split",
-        action="store_true",
-        help="Do not partition pages into train/val/test")
-
-    parser.add_argument(
-        "--train-prob",
-        type=float,
-        default=0.7,
-        help="Training set probability")
-
-    parser.add_argument(
-        "--val-prob",
-        type=float,
-        default=0.15,
-        help="Validation set probability")
-
-    return parser.parse_args()