Remove vuetify and add theme toggle button

src/main.js

@@ -4,8 +4,6 @@ import { createRouter, createWebHashHistory } from "vue-router";
 
 import "./theme.css";
 
-import { registerPlugins } from "@/plugins";
-
 const routes = [
   {
     path: '/:pathMatch(.*)*',
@@ -20,7 +18,5 @@ const router = createRouter({
 
 const app = createApp(App);
 
-registerPlugins(app);
-
 app.use(router);
-app.mount("#app");
+app.mount("#app");