Refactor AudioPlayer and LyricSearch components/ AudioPlayer: add DJ controls (porting from old site), and optimize theme handling.

src/hooks/useHtmlThemeAttr.jsx

@@ -1,4 +1,6 @@
-export function useHtmlThemeAttr () {
+import { useState, useEffect } from "react";
+
+export function useHtmlThemeAttr() {
   const [theme, setTheme] = useState(() =>
     document.documentElement.getAttribute("data-theme") || "light"
   );