docs(nav): add EasyTier Assistant to top navigation

Author: fanyang89

.vitepress/config/cn.ts

@@ -79,6 +79,10 @@ export const cn = defineConfig({
         text: '<iconify-icon icon="fa6-solid:globe" style="margin-right:0.25rem;color:#05b08e;" alt="web"></iconify-icon>Web 控制台',
         link: '/web',
       },
+      {
+        text: '<iconify-icon icon="fa6-solid:wand-magic-sparkles" style="margin-right:0.25rem;color:#8B5CF6;" alt="assistant"></iconify-icon>配置助手',
+        link: 'https://easytier.rs/assistant',
+      },
       {
         text: '<iconify-icon icon="fa6-solid:bug" style="margin-right:0.25rem;color:#FF4500;" alt="bug"></iconify-icon>提交反馈',
         link: 'https://github.com/EasyTier/EasyTier/issues',

.vitepress/config/en.ts

@@ -76,6 +76,10 @@ export const en = defineConfig({
         text: '<iconify-icon icon="fa6-solid:globe" style="margin-right:0.25rem;color:#05b08e;" alt="web"></iconify-icon>Web Console',
         link: '/en/web',
       },
+      {
+        text: '<iconify-icon icon="fa6-solid:wand-magic-sparkles" style="margin-right:0.25rem;color:#8B5CF6;" alt="assistant"></iconify-icon>Config assistant',
+        link: 'https://easytier.rs/assistant',
+      },
       {
         text: '<iconify-icon icon="fa6-solid:bug" style="margin-right:0.25rem;color:#FF4500;" alt="bug"></iconify-icon>Submit Feedback',
         link: 'https://github.com/EasyTier/EasyTier/issues',