feat(docs): add bilingual package documentation site

docs/src/main.tsx

@@ -0,0 +1,18 @@
+import { StrictMode } from "react"
+import { createRoot } from "react-dom/client"
+
+import App from "./App.tsx"
+import "./index.css"
+import { initializeDocsPreferences } from "./lib/preferences"
+
+document.documentElement.lang = window.location.pathname.startsWith("/en-US")
+  ? "en-US"
+  : "zh-Hans"
+
+initializeDocsPreferences()
+
+createRoot(document.getElementById("root")!).render(
+  <StrictMode>
+    <App />
+  </StrictMode>
+)