feat: added vue examples

This PR includes Vue examples, in particular:
- Vue Spa
- Vue Spa + Router
- Vue using Sever Side Rendering with Express.js.

Also updated the general Readme.

vue/spa-router/src/router/index.ts

@@ -0,0 +1,23 @@
+import { createRouter, createWebHistory } from 'vue-router'
+import HomeView from '../views/HomeView.vue'
+
+const router = createRouter({
+  history: createWebHistory(import.meta.env.BASE_URL),
+  routes: [
+    {
+      path: '/',
+      name: 'home',
+      component: HomeView
+    },
+    {
+      path: '/about',
+      name: 'about',
+      // route level code-splitting
+      // this generates a separate chunk (About.[hash].js) for this route
+      // which is lazy-loaded when the route is visited.
+      component: () => import('../views/AboutView.vue')
+    }
+  ]
+})
+
+export default router