🐛 fix: fix gateway runtime (#24)

Author: arvinxx

src/pages/api/gateway.ts

@@ -1,9 +1,13 @@
-import { createLobeChatPluginGateway } from '@lobehub/chat-plugins-gateway';
+import { createGatewayOnEdgeRuntime } from '@lobehub/chat-plugins-gateway';
+
+export const config = {
+  runtime: 'edge',
+};
 
 export default async (req: Request) => {
   if (process.env.NODE_ENV === 'development') {
-    return createLobeChatPluginGateway()(req);
+    return createGatewayOnEdgeRuntime()(req);
   }
 
-  return;
+  return new Response('gateway');
 };