Add setuptools-scm to the tooling docs

docs/pages/packaging.md

@@ -9,6 +9,7 @@ layout: default
 | ----------------------------------------------------- | --------------------------------------------------------------------------------------------------------- | -------------------------------------------------------- | :-: |
 | [build](https://pypa-build.readthedocs.io/en/stable/) | Straightforward tool to build a Python package.                                                           |                                                          | 🟢  |
 | [setuptools](https://setuptools.pypa.io)              | A widely used build backend, used to configure a Python package.                                          | [autodE](https://github.com/duartegroup/autodE)          | 🟢  |
+| [setuptools-scm](https://github.com/pypa/setuptools_scm/)              | Provides automatic versioning Python packages. Also automatically adds all files under source control to the sdist / wheel.                                           | [btrack](https://github.com/quantumjot/btrack)          | 🟢  |
 | [cibuildwheel](https://cibuildwheel.readthedocs.io)   | Builds python wheels for the main operating systems on continuous integration runs (e.g. GitHub actions). | [streamtracer](https://github.com/dstansby/streamtracer) | 🟢  |
 
 ## Conda