feat(app): add WGRplane web UI and backend features

- Add Vue 3 frontend with glassmorphism design (Tailwind CSS)
- Add Go backend handlers: auth, webhooks, stats, scheduler, validation
- Add i18n support (EN, ID, ZH)
- Add Swagger docs and API handlers
- Add nftables integration and plugins support
- Remove deprecated go.mod (migrated to wgrplane)

app/frontend/src/router/index.ts

@@ -0,0 +1,45 @@
+import { createRouter, createWebHistory, type RouteRecordRaw } from 'vue-router'
+
+const routes: RouteRecordRaw[] = [
+  {
+    path: '/',
+    name: 'home',
+    component: () => import('../views/HomeView.vue'),
+    meta: { title: 'Dashboard' }
+  },
+  {
+    path: '/server/:id',
+    name: 'server-detail',
+    component: () => import('../views/ServerDetailView.vue'),
+    meta: { title: 'Server Detail' }
+  },
+  {
+    path: '/server/:id/peers',
+    name: 'peers',
+    component: () => import('../views/PeersView.vue'),
+    meta: { title: 'Peer Management' }
+  },
+  {
+    path: '/server/:id/webhooks',
+    name: 'webhooks',
+    component: () => import('../views/WebhooksView.vue'),
+    meta: { title: 'Webhook Management' }
+  },
+  {
+    path: '/settings',
+    name: 'settings',
+    component: () => import('../views/SettingsView.vue'),
+    meta: { title: 'Settings' }
+  }
+]
+
+const router = createRouter({
+  history: createWebHistory(),
+  routes
+})
+
+router.beforeEach((to) => {
+  document.title = `${to.meta.title || 'WGRplane'} - WGRplane`
+})
+
+export default router