modity code structure

Former-commit-id: 0682ed357210897e0b67c4a6eb31a94b3eb929f1

src/llmtuner/hparams/general_args.py

@@ -0,0 +1,13 @@
+from typing import Literal, Optional
+from dataclasses import dataclass, field
+
+
+@dataclass
+class GeneralArguments:
+    """
+    Arguments pertaining to which techniques we are going to fine-tuning with.
+    """
+    stage: Optional[Literal["pt", "sft", "rm", "ppo"]] = field(
+        default="sft",
+        metadata={"help": "Which stage will be performed in training."}
+    )