feat: Implement Phase 10 support and recommendations features

- Added models for support messages, SLA policies, tickets, ticket events, and ticket links.
- Created routes for help, help admin, newsletter, recommendations, and support for both customer and admin.
- Developed services for help, marketing (newsletter), and recommendations.
- Introduced support service for ticket management, including creation, replies, transitions, and attachments.
- Added validation schemas for support recommendations and ticket management.
- Implemented a cron job for support reconciliation and recommendation cleanup.
- Created migration for new support and recommendation database tables.
- Added unit tests for validation and policy checks related to Phase 10 features.

app/routes/newsletter.routes.js

@@ -0,0 +1 @@
+const r=require("express").Router(),c=require("../controllers/newsletter.controller"),{authenticate}=require("../middleware/auth.middleware"),{checkPermission}=require("../middleware/permission.middleware"),validate=require("../middleware/validate.middleware"),s=require("../validation/supportRecommendation.schemas"),{sensitiveLimiter}=require("../middleware/rateLimit.middleware");r.post("/newsletter/subscribe",sensitiveLimiter,validate(s.newsletter),c.subscribe);r.post("/newsletter/unsubscribe/:token",sensitiveLimiter,c.unsubscribe);r.get("/newsletter/me",authenticate,c.mine);r.get("/admin/newsletter/subscribers",authenticate,checkPermission("newsletter.subscribers.read",{custom:true}),c.list);module.exports=r;