feat: captcha example (#4330)

* feat: captcha example

* fix: fix lint errors

* chore: event handling and methods

* chore: add accessibility features ARIA labels and roles

---------

Co-authored-by: vince <vince292007@gmail.com>

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

@@ -39,6 +39,14 @@ const routes: RouteRecordRaw[] = [
           title: $t('page.examples.ellipsis.title'),
         },
       },
+      {
+        name: 'CaptchaExample',
+        path: '/examples/captcha',
+        component: () => import('#/views/examples/captcha/index.vue'),
+        meta: {
+          title: $t('page.examples.captcha.title'),
+        },
+      },
     ],
   },
 ];