[ci skip] Add upstream scripts

scripts/upstream.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+(
+set -e
+basedir="$(cd "$1" && pwd -P)"
+
+(git submodule update --init --remote && git add . && git commit -m 'Upstream Paper') || (
+	echo "Failed to upstream"
+	exit 1
+) || exit 1
+
+)