Feature Request - giscus support

[iju707]

giscus is one of comments system, using github discussions.
https://giscus.app/

I think the best location for giscus would be at the bottom of pager.

[imfing]

thanks for the proposal, I've created an issue for this #89
will implement it in future releases of Hextra 👍

[imfing]

Implemented in #92