Add new service for managing customer support tickets

Introduce the Service Après-Vente (SAV) module with API endpoints for ticket creation, retrieval, and filtering, integrated with the sidebar navigation and utilizing React Query for frontend state management.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 31f9bd88-0285-4787-81b3-31ceeea5a08b
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/1957c339-2757-4d1f-8e92-e9f71a1ce58e/31f9bd88-0285-4787-81b3-31ceeea5a08b/Dkpn0ry

client/src/components/Sidebar.tsx

@@ -22,7 +22,8 @@ import {
   ChevronLeft,
   ChevronRight,
   X,
-  Settings
+  Settings,
+  Wrench
 } from "lucide-react";
 
 export default function Sidebar() {
@@ -123,6 +124,12 @@ export default function Sidebar() {
       icon: ListTodo, 
       roles: ["admin", "directeur", "manager", "employee"] 
     },
+    { 
+      path: "/sav", 
+      label: "SAV", 
+      icon: Wrench, 
+      roles: ["admin", "directeur", "manager", "employee"] 
+    },
   ];
 
   const adminItems = [