[Refactor] App.jsx: Distribute controllers to each files.

src-ui/app/_app_controllers/UiLanguageController.jsx

@@ -0,0 +1,14 @@
+import { useEffect } from "react";
+
+import { useTranslation } from "react-i18next";
+import { useUiLanguage } from "@logics_configs";
+
+export const UiLanguageController = () => {
+    const { currentUiLanguage } = useUiLanguage();
+    const { i18n } = useTranslation();
+
+    useEffect(() => {
+        i18n.changeLanguage(currentUiLanguage.data);
+    }, [currentUiLanguage.data]);
+    return null;
+};