feat: module toggles in POS config and Instance Manager

- Add GET/PUT /pos/api/config/modules endpoints in POS config_bp.py
- Update sidebar.js to filter nav items based on enabled modules
- Add Modules section to POS config.html with toggles for WhatsApp, Marketplace, MercadoLibre
- Add module load/save logic to POS config.js
- Preload modules in app-init.js for sidebar caching

- Add tenant module management to Instance Manager
  - get_tenant_modules / update_tenant_modules in tenant_service.py
  - GET/PUT /api/tenants/<id>/modules endpoints in tenants_bp.py
  - Add modules modal to manager index.html
  - Add module editing UI and logic to manager.js
  - Add toggle-switch CSS to manager.css

pos/whatsapp-bridge-package.json

@@ -3,7 +3,7 @@
   "version": "1.0.0",
   "type": "commonjs",
   "dependencies": {
-    "@whiskeysockets/baileys": "^6.7.16",
+    "@whiskeysockets/baileys": "^6.7.23",
     "express": "^4.18.2",
     "qrcode": "^1.5.3",
     "pino": "^8.16.2"