feat: add basic layout (#3)

Co-authored-by: typist <git@mail.typist.cc>
Reviewed-on: #3

src/main.tsx

@@ -1,9 +1,10 @@
 import { StrictMode } from 'react'
 import { createRoot } from 'react-dom/client'
 import './index.css'
+import { AppRouter } from './router'
 
 createRoot(document.getElementById('root')!).render(
   <StrictMode>
-    {null}
+    <AppRouter />
   </StrictMode>
 )