fix: Added bullmq

src/mail/mail.consumer.ts

@@ -0,0 +1,18 @@
+import { Processor, WorkerHost } from "@nestjs/bullmq";
+import { Job } from "bullmq";
+import { MailService } from "./mail.service";
+
+@Processor('mail')
+export class MailConsumer extends WorkerHost {
+  constructor(private readonly mailService: MailService) {
+    super()
+  }
+
+  async process(job: Job<{ email: string }>) {
+    switch (job.name) {
+      case 'send-welcome-email':
+        await this.mailService.sendWelcomeMail({ to: job.data.email })
+        break;
+    }
+  }
+}