refactor: Workers and queues and eliminate redundant process listeners

packages/backend/src/queues/index.js

@@ -0,0 +1,21 @@
+import appConfig from '../config/app.js';
+import actionQueue from './action.js';
+import emailQueue from './email.js';
+import flowQueue from './flow.js';
+import triggerQueue from './trigger.js';
+import deleteUserQueue from './delete-user.ee.js';
+import removeCancelledSubscriptionsQueue from './remove-cancelled-subscriptions.ee.js';
+
+const queues = [
+  actionQueue,
+  emailQueue,
+  flowQueue,
+  triggerQueue,
+  deleteUserQueue,
+];
+
+if (appConfig.isCloud) {
+  queues.push(removeCancelledSubscriptionsQueue);
+}
+
+export default queues;