move frontend to upper dir.

src/plugins/README.md

@@ -0,0 +1,3 @@
+# Plugins
+
+Plugins are a way to extend the functionality of your Vue application. Use this folder for registering plugins that you want to use globally.

src/plugins/index.js

@@ -0,0 +1,17 @@
+/**
+ * plugins/index.js
+ *
+ * Automatically included in `./src/main.js`
+ */
+
+// Plugins
+import vuetify from './vuetify'
+import pinia from '@/stores'
+import router from '@/router'
+
+export function registerPlugins (app) {
+  app
+    .use(vuetify)
+    .use(router)
+    .use(pinia)
+}

src/plugins/vuetify.js

@@ -0,0 +1,19 @@
+/**
+ * plugins/vuetify.js
+ *
+ * Framework documentation: https://vuetifyjs.com`
+ */
+
+// Styles
+import '@mdi/font/css/materialdesignicons.css'
+import 'vuetify/styles'
+
+// Composables
+import { createVuetify } from 'vuetify'
+
+// https://vuetifyjs.com/en/introduction/why-vuetify/#feature-guides
+export default createVuetify({
+  theme: {
+    defaultTheme: 'light',
+  },
+})