adding a CODEOWNERS file into the template

Author: havok2063

docs/sphinx/index.rst

@@ -33,6 +33,7 @@ Directory Contents
 * **python/package_name/misc**: General-use tools, including a custom logger and colour printing routines.
 * **python/package_name/tests**: The directory containing the tests for the package. Includes a ``conftest.py`` file with basic configuration using `pytest <https://docs.pytest.org/en/latest/>`_.
 * **CHANGELOG.rst**: A file documenting changes to your code, e.g. new features, fixed issues, or bug-fixes.
+* **CODEOWNERS**: A file assigning ownership of the code to the package or components of the package to various users
 * **README.rst**: A file describing your package.  This will be the main display on Github.
 * **STYLE.rst**: The SDSS style guide for best coding practices.
 * **LICENSE.md**: The open source license for your product.  DO NOT DELETE.