[Formatter] extend matters-html-formatter to be able to bundle any arbitrary multiple files content about ipns-site-generator

[Jasmine-liang]

[UTC+8, 2022.09.07]
Discussed after Dev Sync meeting: No need of adding original article link(from Matters) into IPFS article. Since there's no need of emphasizing Matters during the process of decentralization🫡

[devformatters]

[UTC+8, 2022.09.07] Discussed after Dev Sync meeting: No need of adding original article link(from Matters) into IPFS article. Since there's no need of emphasizing Matters during the process of decentralization🫡

And we'll have more discussion around this in the future. Before that, let's just make IPNS Feed work.

[Jasmine-liang]

Could also consider this request from Matters文章现在可以一键在线转为墙内链接了

最后说两句，分享Matters的IPFS地址文章有个问题，就是IPFS地址的内容只有文章原文，没有评论内容，甚至连原文链接都没有（这里我想建议Matters在生成IPFS内容的时候，专门加一个原文地址链接在里面，这样即使别人看到的是IPFS内容，也可以链接回Matters参与讨论）。Matters的评论区质量这么高，但是分享出去IPFS地址的文章，别人却找不到原文入口，也就不利于促成更多的讨论了。

[devformatters]

@Jasmine-liang I'll close it, since Tomas and you have implemented in other PR.