feat(frontend): sidebar migration started

frontend/.tanstack/tmp/053913e4-c93ff02c43e2936f96783ab815d9bc13

@@ -0,0 +1,9 @@
+import { createFileRoute } from '@tanstack/react-router'
+
+export const Route = createFileRoute('/_adminLayout/admin/settings')({
+  component: RouteComponent,
+})
+
+function RouteComponent() {
+  return <div>Hello "/_adminLayout/admin/settings"!</div>
+}

frontend/.tanstack/tmp/e14c4eec-39d7ed97d04dd2ae5c727a465e0599da

@@ -0,0 +1,15 @@
+import * as React from 'react'
+import { Outlet, createRootRoute } from '@tanstack/react-router'
+
+export const Route = createRootRoute({
+  component: RootComponent,
+})
+
+function RootComponent() {
+  return (
+    <React.Fragment>
+      <div>Hello "__root"!</div>
+      <Outlet />
+    </React.Fragment>
+  )
+}