[Update] Main Page: LanguageSelector. Fetch language list data from Python when starting up software.

src-ui/logics/useSelectableLanguageList.js

@@ -0,0 +1,17 @@
+import { useStore_SelectableLanguageList } from "@store";
+import { useStdoutToPython } from "@logics/useStdoutToPython";
+
+export const useSelectableLanguageList = () => {
+    const { asyncStdoutToPython } = useStdoutToPython();
+    const { currentSelectableLanguageList, updateSelectableLanguageList } = useStore_SelectableLanguageList();
+
+    const getSelectableLanguageList = () => {
+        asyncStdoutToPython("/controller/list_language_and_country");
+    };
+
+    return {
+        currentSelectableLanguageList,
+        getSelectableLanguageList,
+        updateSelectableLanguageList,
+    };
+};