feat: добавить новый backend и cabinet

- добавлен новый Nest backend для auth, projects и project access tokens
- добавлена control-plane схема БД и миграция Drizzle
- перенесён старый backend в old-backend
- добавлен React/Vite cabinet с auth-only входом и Mantine layout
- обновлены workspace scripts и lockfile

apps/cabinet/src/app/app.tsx

@@ -0,0 +1,17 @@
+import { BrowserRouter } from 'react-router-dom'
+import { SWRConfig } from 'swr'
+import { ThemeProvider } from 'infra/theme'
+
+import { AppRouter } from './app-router'
+
+export const App = () => {
+  return (
+    <BrowserRouter>
+      <SWRConfig value={{ shouldRetryOnError: false }}>
+        <ThemeProvider>
+          <AppRouter />
+        </ThemeProvider>
+      </SWRConfig>
+    </BrowserRouter>
+  )
+}