Feature request: Add additional social media

[t3kg33k]

Bluesky is public now. Could you please add Bluesky icon as an option to add Bluesky to social media section? Also, request ability to add Linktree URL (with icon) as an option to social media section.

[t3kg33k]

Messing around and doing research on the interwebs, I found this link for Bluesky: https://github.com/orgs/community/discussions/69265

I made this change to socials.html in the theme:

`{{ if .Site.Params.bluesky_url }}

</a>

{{ end }}`

I'm not a developer, just a tinkerer. So, what you see above was just something I was playing around with and it seems to work. Here is my test site that I pushed the above to: https://www.edscloud.org/