Moved telemetry code to script.

pages/api/scripts/telemetry.js

@@ -0,0 +1,14 @@
+import { TELEMETRY_PIXEL } from 'lib/constants';
+
+export default function handler(req, res) {
+  const { v } = req.query;
+  res.setHeader('content-type', 'text/javascript');
+  res.send(
+    `(() => {
+      const i = document.createElement('img');
+      i.setAttribute('src','${TELEMETRY_PIXEL}?v=${v}');
+      i.setAttribute('style','width:0;height:0;position:absolute;pointer-events:none;');
+      document.body.appendChild(i);
+    })();`,
+  );
+}