feat: initialisation complète du projet CESIZen

- Backend Laravel 11 (API REST, JWT auth, PostgreSQL)
- Frontend Next.js 14 (React, TypeScript, Tailwind CSS)
- Docker Compose (PostgreSQL, backend, frontend)
- Modules : auth, profil, tracker émotions, informations, admin

backend/app/Http/Middleware/RoleMiddleware.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+
+class RoleMiddleware
+{
+    public function handle(Request $request, Closure $next, string ...$roles)
+    {
+        $user = auth()->user();
+
+        if (!$user || !in_array($user->role->nom, $roles)) {
+            return response()->json(['message' => 'Accès non autorisé'], 403);
+        }
+
+        return $next($request);
+    }
+}