docs: redirect /api/group/* to WIP page (#12593)

Adds a temporary redirect for all /api/group/* routes to a new "Under
Development" page while the API is being built.

---------

Co-authored-by: Copilot Autofix powered by AI <[email protected]>

apps/docs/app/api-under-development/page.tsx

@@ -0,0 +1,10 @@
+export default function ApiUnderDevelopmentPage() {
+  return (
+    <div className="flex min-h-screen flex-col items-center justify-center p-8 text-center">
+      <h1 className="mb-4 text-3xl font-bold">API Under Development</h1>
+      <p className="max-w-md text-muted-foreground">
+        The API endpoints for this resource are currently under development and are not ready to be used yet. Please check back later!
+      </p>
+    </div>
+  );
+}

apps/docs/redirects.json

@@ -3258,5 +3258,10 @@
     "source": "/guides/manage/console/overview",
     "destination": "/guides/manage/console/console-overview",
     "permanent": true
+  },
+  {
+    "source": "/api/group/:path*",
+    "destination": "/api-under-development",
+    "permanent": false
   }
 ]