add script to create pull-request

upgrade/upgrade.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+set -e
+
+cd "$(dirname "$0")/.."
+
+go run upgrade/upgrade.go
+VERSION=$(grep '#define SQLITE_VERSION_NUMBER' sqlite3-binding.c | grep -o '[0-9]\{7\}')
+
+if [ -z "$VERSION" ]; then
+  echo "Error: Could not extract SQLite version"
+  exit 1
+fi
+
+git branch -d "sqlite-amalgamation-$VERSION" 2>/dev/null || true
+git checkout -b "sqlite-amalgamation-$VERSION"
+git commit -m "Upgrade SQLite to version $VERSION" sqlite3-binding.c sqlite3-binding.h sqlite3ext.h
+git push origin HEAD
+
+gh pr create --title "Upgrade SQLite to version $VERSION" --body "Automated SQLite upgrade to version $VERSION" --web