Provide botocore client stub

Author: haasonsaas

src/botocore/client.py

@@ -0,0 +1,8 @@
+"""Minimal botocore.client stub used for local testing."""
+
+from __future__ import annotations
+
+
+class Config:  # pragma: no cover - simple data holder
+    def __init__(self, **_kwargs):
+        return