[feature] create output_dir if it does not exist

src/create_testtakers.py

@@ -4,6 +4,7 @@
 import os
 import re
 import sys
+from pathlib import Path
 import csv
 import json
 from dataclasses import dataclass
@@ -137,6 +138,7 @@ students = load_students_from_csv_file(CSV_DIR + '/' + CSV_FILE)
 
 # File encoding: utf8
 OUTPUT_DIR = '../output'
+Path(OUTPUT_DIR).mkdir(parents=False, exist_ok=True)
 
 save_students_as_json_file(f'{OUTPUT_DIR}/{base_filename}.json', students)