initial structure implemented

docs -> _docs

models/api/batch_requests.py

@@ -0,0 +1,16 @@
+from typing import Optional
+from pydantic import BaseModel
+
+
+class BatchMetadata(BaseModel):
+    start_sequence: int
+    end_sequence: int
+    batch_number: int
+
+
+class BatchResponse(BaseModel):
+    accepted: bool
+    sequences: list[int]
+    next_expected: int
+    message: Optional[str] = None
+