feat: add context manager to suppress print from e.g. macros

src/aarecommon/config/util.py

@@ -0,0 +1,10 @@
+import os
+from contextlib import contextmanager, redirect_stderr, redirect_stdout
+
+
+@contextmanager
+def suppress_output():
+    """Suppress both stdout and stderr by redirecting them to os.devnull."""
+    with open(os.devnull, "w") as fnull:
+        with redirect_stdout(fnull), redirect_stderr(fnull):
+            yield