Update CHN IP CIDR generation

Build/lib/with-banner.js

@@ -0,0 +1,17 @@
+/**
+ * @param {string} title
+ * @param {string[]} description
+ * @param {Date} date
+ * @param {string[]} content
+ * @returns {string}
+ */
+const withBanner = (title, description, date, content) => {
+    return `########################################
+# ${title}
+${description.map(line => `# ${line}`).join('\n')}
+# Last Updated: ${date.toISOString()}
+# Size: ${content.length}
+########################################\n` + content.join('\n') + '\n################# END ###################\n';
+};
+
+module.exports.withBanner = withBanner;