feat: add admin user management features and update user repository methods

- Implemented updateRoles, updateSanctions, and deleteUser methods in both in-memory and PostgreSQL user repositories.
- Enhanced UserSanctions and UserServerRestriction interfaces to include additional properties.
- Added AdminView component for admin functionalities including user lookup, role management, sanctions application, and profile management.
- Integrated admin token handling in TRPC client for secure API requests.
- Updated routing to include admin dashboard and linked it in the default layout.

app/gateway-frontend/src/utils/trpc.ts

@@ -1,10 +1,21 @@
 import { createTRPCProxyClient, httpBatchLink } from '@trpc/client';
 import type { AppRouter } from '../../../gateway-api/src/router';
 
+const getAdminToken = (): string | null => {
+  if (typeof window === 'undefined') {
+    return null;
+  }
+  return window.localStorage.getItem('sammo-admin-token');
+};
+
 export const trpc = createTRPCProxyClient<AppRouter>({
   links: [
     httpBatchLink({
       url: '/api/trpc', // 실제 환경에 맞게 조정 필요
+      headers() {
+        const token = getAdminToken();
+        return token ? { 'x-admin-token': token } : {};
+      },
     }),
   ],
 });