[next] Websocket Keep Alive (#2394)

* feat: added keepalive config

* fix: format

* fix: adjusted client timeout default

* Update server.ts

src/core/client/framework/lib/network/createManagedSubscriptionClient.ts

@@ -89,6 +89,7 @@ export default function createManagedSubscriptionClient(
       if (!subscriptionClient) {
         subscriptionClient = new SubscriptionClient(url, {
           reconnect: true,
+          timeout: 60000,
           connectionCallback: err => {
             if (err) {
               // If an error is thrown as a result of live updates being