feat: Re-compute the given items cost job.

feat: Optimize the architecture.

server/src/jobs/welcomeEmail.ts

@@ -0,0 +1,11 @@
+import { Container } from 'typedi';
+import MailerService from '../services/mailer';
+
+export default class WelcomeEmailJob {
+  public async handler(job, done: Function): Promise<void> {
+    const Logger = Container.get('logger');
+
+    console.log('✌Email Sequence Job triggered!');
+    done();
+  }
+}