feat: add native fnOS PostgreSQL shared service

frontend/postgres-admin/main.ts

@@ -0,0 +1,7 @@
+import { createApp } from "vue";
+import ElementPlus from "element-plus";
+import "element-plus/dist/index.css";
+import App from "./App.vue";
+import "./style.css";
+
+createApp(App).use(ElementPlus).mount("#app");