Adds frontend for cms page

frontend/src/api/useCmsInstances.ts

@@ -0,0 +1,11 @@
+import { useQuery } from '@tanstack/react-query';
+import { api } from '@/lib/api-client';
+import type { CmsInstance } from './types';
+
+export function useCmsInstances() {
+    return useQuery<CmsInstance[], Error>({
+        queryKey: ['cmsInstances'],
+        queryFn: () => api.get<CmsInstance[]>('/api/v1/CmsInstances'),
+        staleTime: 30_000,
+    });
+}