Bluesky integration

[irshadahmad21]

Hello there

It will be great to have integration of for Bluesky for its increasing popularity.

There is an example of OAuth implementation of AT Protocol for Astro in this repo https://github.com/pilcrowonpaper/atproto-oauth-example

There is also an official package to handle all the complicated stuff https://www.npmjs.com/package/@atproto/oauth-client-node