Add bluesky badge for biocards

Logo came from the media kit linked from https://bsky.social/about/blog/press-faq

Author: jasongrout

_includes/biocard.html

@@ -26,6 +26,9 @@
       {% if include.mastodon %}
         <a href="{{ include.mastodon }}" rel="noopener noreferrer"><img src="/assets/badges/mastodon.svg" alt="Mastodon" title="Mastodon"></a>
       {% endif %}
+      {% if include.bluesky_handle %}
+        <a href="{{ include.bluesky_handle }}" rel="noopener noreferrer"><img src="/assets/badges/bluesky_media_kit_logo_svgs.svg" alt="Bluesky" title="Bluesky"></a>
+      {% endif %}
       {% if include.subproject %}
         <div class="biocard-subproject">{{ include.subproject }}</div>
       {% endif %}