GPT4 results & minor changes

data/finetuned_dataset.csv

modules/data_generator/training_dataset_generator.py

modules/evaluators/llm_annotation_evaluator.py

modules/llm/GPT-4/GPT-4_zero_shot.py

modules/llm/Mistral-7b/Mistral-7b_zero_shot.py

modules/llm/Mixtral-8x7b/Mixtral-8x7b_zero_shot.py

modules/llm/utils.py

results/GPT-4/GPT-4_zero_shot_results.json