feat: group analytics

* wip

* wip

* wip

* wip

* wip

* add buffer

* wip

* wip

* fixes

* fix

* wip

* group validation

* fix group issues

* docs: add groups

apps/testbed/src/main.tsx

@@ -0,0 +1,10 @@
+import { createRoot } from 'react-dom/client';
+import { BrowserRouter } from 'react-router-dom';
+import App from './App';
+import './styles.css';
+
+createRoot(document.getElementById('root')!).render(
+  <BrowserRouter>
+    <App />
+  </BrowserRouter>
+);