feat: add language-cell-decorator

Author: mcanouil

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

@@ -372,6 +372,12 @@
     Render [Kroki](https://kroki.io/) diagrams in Quarto websites — including HTML and PDF output.
     This extension uses the Kroki API via HTTP GET requests. The Kroki service URL is customizable, and the output format (e.g. SVG, PNG, etc.) can be specified per diagram.
 
+- name: language-cell-decorator
+  path: https://github.com/mcanouil/quarto-language-cell-decorator
+  author: '[Mickaël CANOUIL](https://github.com/mcanouil)'
+  description: >
+    Quarto extension to add a decorator to the code cells to display the language name.
+
 - name: language-name
   path: https://github.com/andrewheiss/language-name
   author: '[Andrew Heiss](https://github.com/andrewheiss/)'