chore: import upstream snapshot with attribution

scripts/qa/lib/upgrade-node/old/server.ts

@@ -0,0 +1,22 @@
+import * as http from "http";
+import { CopilotRuntime, OpenAIAdapter } from "@copilotkit/backend";
+
+const port = 4000;
+var HEADERS = {
+  "Access-Control-Allow-Origin": "*",
+  "Access-Control-Allow-Methods": "GET, POST, OPTIONS, PUT, PATCH, DELETE",
+  "Access-Control-Allow-Headers": "X-Requested-With,content-type",
+};
+var server = http.createServer(function (req, res) {
+  // Respond to OPTIONS (preflight) request
+  if (req.method === "OPTIONS") {
+    res.writeHead(200, HEADERS);
+    res.end();
+    return;
+  }
+  var copilotKit = new CopilotRuntime();
+  copilotKit.streamHttpServerResponse(req, res, new OpenAIAdapter(), HEADERS);
+});
+server.listen(port, function () {
+  console.log(`Server running at http://localhost:${port}`);
+});