Refactor backend folder structure (#4505)

* Refactor backend folder structure

Co-authored-by: Charles Bochet <charles@twenty.com>

* fix tests

* fix

* move yoga hooks

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-server/src/engine/integrations/email/email.service.ts

@@ -0,0 +1,23 @@
+import { Inject, Injectable } from '@nestjs/common';
+
+import { SendMailOptions } from 'nodemailer';
+
+import { MessageQueue } from 'src/engine/integrations/message-queue/message-queue.constants';
+import { MessageQueueService } from 'src/engine/integrations/message-queue/services/message-queue.service';
+import { EmailSenderJob } from 'src/engine/integrations/email/email-sender.job';
+
+@Injectable()
+export class EmailService {
+  constructor(
+    @Inject(MessageQueue.emailQueue)
+    private readonly messageQueueService: MessageQueueService,
+  ) {}
+
+  async send(sendMailOptions: SendMailOptions): Promise<void> {
+    await this.messageQueueService.add<SendMailOptions>(
+      EmailSenderJob.name,
+      sendMailOptions,
+      { retryLimit: 3 },
+    );
+  }
+}