feat: add BullMQ queue singleton

apps/web/src/lib/queue.ts

@@ -0,0 +1,13 @@
+import { Queue } from "bullmq";
+import { getRedis } from "./redis";
+
+let queue: Queue | null = null;
+
+export function getQueue(): Queue {
+  if (!queue) {
+    queue = new Queue("codeboard:generate", {
+      connection: getRedis(),
+    });
+  }
+  return queue;
+}