chore: import upstream snapshot with attribution

FlagEmbedding/evaluation/beir/arguments.py

@@ -0,0 +1,13 @@
+from dataclasses import dataclass, field
+
+from FlagEmbedding.abc.evaluation.arguments import AbsEvalArgs
+
+
+@dataclass
+class BEIREvalArgs(AbsEvalArgs):
+    """
+    Argument class for BEIR evaluation.
+    """
+    use_special_instructions: bool = field(
+        default=False, metadata={"help": "Whether to use specific instructions in `prompts.py` for evaluation. Default: False"}
+    )