Add bump nightly script

script/bump-nightly

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+branch=$(git rev-parse --abbrev-ref HEAD)
+if [ "$branch" != "main" ]; then
+  echo "You must be on main to run this script"
+  exit 1
+fi
+
+git pull --ff-only origin main
+git tag -f nightly
+git push -f origin nightly