docs: cotributing: maintainers: Adding new plugin

Signed-off-by: John Andersen <[email protected]>

Author: John Andersen

docs/contributing/index.rst

@@ -19,3 +19,4 @@ or post in the `Gitter Chat <https://gitter.im/dffml/community>`_.
     testing
     docs
     debugging
+    maintainers

docs/contributing/maintainers.rst

@@ -0,0 +1,28 @@
+Maintainer Docs
+===============
+
+These docs are for the maintainers of DFFML, if you're not a maintainer, you
+won't find anything useful here, unless your just curious.
+
+Adding A New Plugin
+-------------------
+
+When a new plugin is added we need to go manually upload it for the first time.
+
+.. code-block:: console
+
+    $ cd model/new_model
+    $ python3.7 setup.py test
+    $ rm -rf dist
+    $ git clean -xdf
+    $ python3.7 setup.py sdist
+    $ twine upload dist/*
+
+Once it's be uploaded, we go to PyPi and create an API key which will be used to
+upload it via the automatic release at the end of ``run_plugin`` within the CI
+script.
+
+.. image:: /images/pypi-token-to-github-secret.gif
+
+Finally, update the ``PYPI_TOKENS`` file in ``.github/workflows/testing.yml``.
+Add a line for the plugin along with it's sceret.