feat(packages): adiciona módulo de pacotes e remove rota de contratos

- Cria PackagesPage com DefaultHeaderPage
- Adiciona rota /packages e item no menu lateral
- Remove contract.route.js e entrada de Contratos do menu

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/router/routes/contract.route.js

@@ -1,25 +0,0 @@
-export default [
-  {
-    path: "/contracts",
-    name: "ContractPage",
-    component: () => import("pages/contracts/ContractPage.vue"),
-    meta: {
-      title: {
-        value: "Contratos",
-        translate: false,
-      },
-      requireAuth: true,
-      requiredPermission: "dashboard",
-      breadcrumbs: [
-        {
-          name: "DashboardPage",
-          title: "Dashboard",
-        },
-        {
-          name: "ContractPage",
-          title: "Contratos"
-        }
-      ],
-    },
-  },
-];

src/stores/navigation.js

@@ -40,15 +40,6 @@ export const navigationStore = defineStore("navigation", () => {
       permission: false,
       permissionScope: "dashboard",
     },
-    {
-      type: "single",
-      title: "Contratos",
-      name: "ContractPage",
-      icon: "mdi-file-sign",
-      disable: false,
-      permission: false,
-      permissionScope: "dashboard"
-    },
     {
       type: "single",
       title: "TBR",