Add CSV coverage PR commenter

misc/scripts/library-coverage/utils.py

@@ -2,10 +2,12 @@ import subprocess
 import os
 import csv
 import sys
+import shlex
 
 
 def subprocess_run(cmd):
     """Runs a command through subprocess.run, with a few tweaks. Raises an Exception if exit code != 0."""
+    print(shlex.join(cmd))
     return subprocess.run(cmd, capture_output=True, text=True, env=os.environ.copy(), check=True)