feat: 更新 lazyload 配置，支持原生 lazyload 功能

feat: 代碼優化
feat: 優化 pageType 邏輯
fix: 修復解密文章後， chartjs 沒有加載的 bug

layout/includes/third-party/comments/artalk.pug

@@ -5,7 +5,7 @@ script.
   (() => {
     let artalkItem = null
     const option = !{JSON.stringify(option)}
-    const isShuoshuo = GLOBAL_CONFIG_SITE.isShuoshuo
+    const isShuoshuo = GLOBAL_CONFIG_SITE.pageType === 'shuoshuo'
 
     const destroyArtalk = () => {
       if (artalkItem) {