Function updateTheme

apps/frontend/src/context/themeContext.tsx:17–21

(theme: THEME)

  const [theme, setTheme] = useState<THEME>("default");

  function updateTheme(theme: THEME) {
    setTheme(theme);
    localStorage.setItem("theme", theme);
    document.querySelector("html")?.setAttribute("data-theme", theme);
  }

  useEffect(() => {
    const currentTheme = localStorage.getItem("theme") as THEME | null;