feat: add sft scripts for Magicoder-Evol-Instruct-110K and alpaca-gpt4-data

- sft_magicoder.py: export ise-uiuc/Magicoder-Evol-Instruct-110K
- sft_alpaca_gpt4.py: export llm-wizard/alpaca-gpt4-data with instruction+input
- remove deprecated SFT scripts

scripts/supervised_finetuning/sft_belle.py

@@ -1,23 +0,0 @@
-from datasets import load_dataset
-from pipeline import export_dataset
-
-
-def process_func(input_dict: dict):
-    conversations = input_dict["conversations"]
-    n = len(conversations) // 2
-    examples = []
-    for i in range(n):
-        user_msg = conversations[2 * i]["value"]
-        assistant_msg = conversations[2 * i + 1]["value"]
-        examples.append({"query": user_msg, "response": assistant_msg})
-    return examples
-
-
-if __name__ == "__main__":
-    dataset = load_dataset("BelleGroup/train_3.5M_CN")
-    export_dataset(
-        dataset=dataset["train"],
-        output_dir="./dataset",
-        output_prefix="belle-sft",
-        process_func=process_func,
-    )