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/demos.ts

@@ -165,6 +165,15 @@ const routes: RouteRecordRaw[] = [
               },
             ],
           },
+          {
+            name: 'FullScreenDemo',
+            path: '/demos/features/full-screen',
+            component: () =>
+              import('#/views/demos/features/full-screen/index.vue'),
+            meta: {
+              title: $t('page.demos.features.fullScreen.title'),
+            },
+          },
           {
             name: 'ClipboardDemo',
             path: '/demos/features/clipboard',