ADD First stage routes

src/routes/stats.py

@@ -0,0 +1,13 @@
+from fastapi import APIRouter
+from uuid import uuid4
+from typing import Union
+
+router = APIRouter(
+    prefix="/stats",
+    tags=["stats"],
+)
+
+@router.get("/{contest_id}")
+def get_stats(contest_id: uuid4, group_id: Union[uuid4, None] = None):
+    pass
+