Add bluesky as a comments provider

[thiswillbeyourgithub]

Hi,

I plan on starting my blog soon and was inquiring about comments section. I figured why not use bluesky and turns out I'm not alone:

• https://librarifran.com/posts/2025/02/05/bluesky-comments.html
• https://www.coryzue.com/writing/bluesky-comments/
• https://capscollective.com/blog/bluesky-blog-comments
• ...

Can you consider adding something like this to have bluesky as a comments provider?