feat(i18n): implement localization using LinguiJS

apps/client/public/scripts/initialize-theme.js

@@ -2,6 +2,7 @@
   try {
     if (
       localStorage.theme === "dark" ||
+      // eslint-disable-next-line lingui/no-unlocalized-strings
       window.matchMedia("(prefers-color-scheme: dark)").matches
     ) {
       document.documentElement.classList.add("dark");