feat: added auto refresh

src/core/express/withAutoRefresh.ts

@@ -0,0 +1,23 @@
+export default function withAutoRefresh(svg: string, refreshAfter: number) {
+  return `
+    <html>
+      <head>
+        <script>
+          setTimeout(() => {
+            window.location.reload();
+          }, ${refreshAfter});
+        </script>
+
+        <style>
+          body {
+            margin: 0;
+          }
+        </style>
+      </head>
+
+      <body>
+        ${svg}
+      </body>
+    </html>
+  `;
+}