Add jupyter-stack-trace (#56)

Author: fcollonval

extensions.tpl

@@ -113,7 +113,8 @@ This a list of nice JupyterLab extensions not part of ``jupyterlab-contrib`` org
 - [Dask](https://github.com/dask/dask-labextension): Manage Dask clusters, as well as embed Dask's dashboard plots directly into JupyterLab panes.
 - [Ganimede](https://github.com/manugraj/ganimede) - Store, version, edit and execute notebooks in sandboxes and integrate them directly via REST interfaces.
 - [gator](https://github.com/mamba-org/gator): Conda environment and package management extension from within Jupyter
-- [jupyter-ai](https://jupyter-ai.readthedocs.io/): A generative AI extension for JupyterLab 
+- [jupyter-ai](https://jupyter-ai.readthedocs.io/): A generative AI extension for JupyterLab
+- [jupyter-stack-trace](https://github.com/teticio/jupyter-stack-trace) - Click on an item in the stack trace to open the file on the relevant line.
 - [jupyterlab-autoplay](https://github.com/remborg/autoplay): Run and hide code cells automatically when opening a notebook.
 - [jupyterlab-autorun-cells](https://pypi.org/project/jupyterlab-autorun-cells) (Code repo is gone): Allows toggling of code cells to execute automatically after opening a notebook.
 - [jupyterlab_commands](https://github.com/timkpaine/jupyterlab_commands) - Add arbitrary python commands to the jupyterlab command palette