feat: 修改 toc 打開效果

feat: 適配 hexo-blog-encrypt
fix: 修復 hexo 新版本下，prismjs 的問題
improvement: 在 pjax 關閉的情況下。減少不必要的全局變量
improvement: 更新依賴版本
improvement: 頁面進入效果優化
improvement: 添加平滑滾動
improvement: 兼容性優化
improvement: 優化 lighthouse 分數
improvement: 優化代碼

layout/includes/header/nav.pug

@@ -2,20 +2,20 @@ nav#nav
   span#blog-info
     a(href=url_for('/') title=config.title)
       if theme.nav.logo
-        img.site-icon(src=url_for(theme.nav.logo))
+        img.site-icon(src=url_for(theme.nav.logo) alt='Logo')
       if theme.nav.display_title
         span.site-name=config.title
     
   #menus
     if (theme.algolia_search.enable || theme.local_search.enable || theme.docsearch.enable)
       #search-button
-        a.site-page.social-icon.search(href="javascript:void(0);")
+        span.site-page.social-icon.search
           i.fas.fa-search.fa-fw
           span=' '+_p('search.title')
     !=partial('includes/header/menu_item', {}, {cache: true})
 
     #toggle-menu
-      a.site-page(href="javascript:void(0);")
+      span.site-page
         i.fas.fa-bars.fa-fw