feat(@vben/playground): add full-screen examples (#4126)

* feat(@vben/playground): add full-screen examples

* chore: rm unuse class

* chore: move fullScreen demo to features router

* chore: responsive

* chore: 调整路由路径

* chore: card增加间距

---------

Co-authored-by: Li Kui <90845831+likui628@users.noreply.github.com>

playground/src/router/routes/modules/examples.ts

@@ -17,7 +17,7 @@ const routes: RouteRecordRaw[] = [
     children: [
       {
         name: 'EllipsisDemo',
-        path: '/examples/ellipsis',
+        path: 'ellipsis',
         component: () => import('#/views/examples/ellipsis/index.vue'),
         meta: {
           title: $t('page.examples.ellipsis.title'),