feat(docs): 添加中英文国际化支持

docs/.vitepress/theme/index.js

@@ -1,5 +1,6 @@
 import DefaultTheme from 'vitepress/theme'
 import ParticleHero from './components/ParticleHero.vue'
+import ParticleHeroEn from './components/ParticleHeroEn.vue'
 import FeatureCard from './components/FeatureCard.vue'
 import './custom.css'
 
@@ -7,6 +8,7 @@ export default {
   extends: DefaultTheme,
   enhanceApp({ app }) {
     app.component('ParticleHero', ParticleHero)
+    app.component('ParticleHeroEn', ParticleHeroEn)
     app.component('FeatureCard', FeatureCard)
   }
 }