sync github pages to demo_linear_layout.py on git commit

Author: latentCall145

.githooks/pre-commit

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# the outer repo only tracks the tensor-viz gitlink, not files inside the submodule.
+# sync/stage the generated linear-layout example file in tensor-viz's own pre-commit hook instead.