make check metrics standalone

Signed-off-by: Terry Kong <[email protected]>

Author: terrykong

tests/check_metrics.py

@@ -1,3 +1,9 @@
+#!/usr/bin/env -S uv run --script -q
+# /// script
+# dependencies = [
+#   "rich"
+# ]
+# ///
 # Copyright (c) 2025, NVIDIA CORPORATION.  All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");