Add 3x extensions

Author: coatless

docs/extensions/listings/shortcodes-and-filters.yml

@@ -521,3 +521,21 @@
   path: https://github.com/andrewheiss/quarto-wordcount
   author: '[Andrew Heiss](https://github.com/andrewheiss/)'
   description: Quarto extension for calculating accurate word counts
+
+- name: tabby
+  path: https://github.com/coatless-quarto/tabby
+  author: '[James Joseph Balamuta](https://github.com/coatless/)'
+  description: >
+    Quarto Extension for Automatic Language Tabs
+
+- name: bluesky-comments
+  path: https://github.com/coatless-quarto/bluesky-comments
+  author: '[James Joseph Balamuta](https://github.com/coatless/)'
+  description: >
+    Quarto Shortcode Extension to Embed Comments from Bluesky
+
+- name: colab
+  path: https://github.com/coatless-quarto/colab
+  author: '[James Joseph Balamuta](https://github.com/coatless/)'
+  description: >
+    Quarto Extension to Transform Quarto Documents into Google Colaboratory Notebooks