Add: backend dir and moved frontend to frontend dir

frontend/src/components/LanguageButton.jsx

@@ -0,0 +1,33 @@
+import { useTranslation } from "react-i18next";
+import NavItem from '@/components/NavBar/NavItem';
+
+const LanguageButton = ({ as = "button", index = null }) => {
+  const { i18n } = useTranslation();
+
+  const toggleLanguage = () => {
+    console.log(i18n.language);
+    const nextLang = i18n.language === "es" ? "en" : "es";
+    i18n.changeLanguage(nextLang);
+  };
+
+  if (as === "navitem") {
+    return (
+      <NavItem 
+        item={{
+          label: i18n.language === "es" ? "🇪🇸" : "🇺🇸",
+          href: "#"
+        }}
+        index={index}
+        onClick={toggleLanguage}
+      />
+    );
+  }
+
+  return (
+    <button onClick={toggleLanguage} className="btn-imperial">
+      {i18n.language === "es" ? "🇪🇸" : "🇺🇸"}
+    </button>
+  );
+};
+
+export default LanguageButton;