fix: user invite email not sending and null variables

- Add missing BullModule queue registration and BullBoardModule to UsersModule
- Add invitingUser to event payloads to track who sent the invite
- Fix incorrect global variable in SendInviteUsersMailMessage (__views_dir -> __images_dirname)
- Use invitingUser as fromUser instead of invited user in email
- Update processors to use BullMQ pattern

Fixes issues:
1. Email not sending due to missing queue/processor registration
2. Null variables in email (firstName/lastName) because fromUser was the invited user
3. Image attachment failing due to wrong path

packages/server/src/modules/UsersModule/processors/SendInviteUserMail.processor.ts

@@ -1,7 +1,6 @@
-import { JOB_REF, Process, Processor } from '@nestjs/bull';
-import { Job } from 'bull';
-import { Inject, Scope } from '@nestjs/common';
-import { REQUEST } from '@nestjs/core';
+import { Processor, WorkerHost } from '@nestjs/bullmq';
+import { Job } from 'bullmq';
+import { Scope } from '@nestjs/common';
 import { ClsService, UseCls } from 'nestjs-cls';
 import {
   SendInviteUserMailJob,
@@ -14,19 +13,17 @@ import { SendInviteUsersMailMessage } from '../commands/SendInviteUsersMailMessa
   name: SendInviteUserMailQueue,
   scope: Scope.REQUEST,
 })
-export class SendInviteUserMailProcessor {
+export class SendInviteUserMailProcessor extends WorkerHost {
   constructor(
     private readonly sendInviteUsersMailService: SendInviteUsersMailMessage,
-    @Inject(REQUEST) private readonly request: Request,
-    @Inject(JOB_REF)
-    private readonly jobRef: Job<SendInviteUserMailJobPayload>,
     private readonly clsService: ClsService,
-  ) { }
+  ) {
+    super();
+  }
 
-  @Process(SendInviteUserMailJob)
   @UseCls()
-  async handleSendInviteMail() {
-    const { fromUser, invite, organizationId, userId } = this.jobRef.data;
+  async process(job: Job<SendInviteUserMailJobPayload>) {
+    const { fromUser, invite, organizationId, userId } = job.data;
 
     this.clsService.set('organizationId', organizationId);
     this.clsService.set('userId', userId);