feat: enable commentCount for Twikoo and Waline

[HEIGE-PCloud]

Reference

• Twikoo
• Waline

[HEIGE-PCloud]

@gclm 麻烦帮忙测试一下。

[vercel]

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[nyancccat]

waline 评论次数不显示。

Waline 支持在非评论区单独显示评论数，其方式和页面浏览量类似。Waline 会自动查找页面中 class 值为 waline-comment-count 的元素，获取其 id 为查询条件，并将值填入其中。

我看文章页面确实生成了 waline-comment-count 的 class:

<i class="far fa-comments fa-fw"></i>&nbsp;<span class="waline-comment-count" id="waline-comment-count"></span>&nbsp;条评论

配置项

commentCount = true
可是还是显示 0 条。