Link to plugin_template repo from plugin wirter's guide

re #2859
https://pulp.plan.io/issues/2859

docs/plugins/plugin-writer/first-plugin.rst

@@ -5,6 +5,9 @@ For a complete list of what should be done to have a working plugin, check :doc:
 In this section key parts of plugin implementation are covered in more detail to help you as
 a plugin writer to get started.
 
+In addition, `the Plugin template <https://github.com/pulp/plugin_template>`_ can be used to help
+with plugin layout and stubs for necessary classes.
+
 .. _understanding-models:
 
 Understanding models
@@ -212,4 +215,4 @@ One of the ways to perform publishing:
 * Use :class:`~pulpcore.plugin.models.ProgressBar` to report progress of some steps if needed.
 
 Check ``pulp_example`` implementation of `the ExamplePublisher
-<https://github.com/pulp/pulp_example/blob/master/pulp_example/app/models.py#L117-L181>`_.
+<https://github.com/pulp/pulp_example/blob/master/pulp_example/app/models.py#L117-L181>`_.

docs/plugins/plugin-writer/index.rst

@@ -13,6 +13,8 @@ still allowing plugin writers the freedom to define their workflows as they deem
 
 Along with this guide `an example of plugin implementation
 <https://github.com/pulp/pulp_example/>`_, ``pulp_example``, is provided.
+`The Plugin Template <https://github.com/pulp/plugin_template>`_ can be used to start
+the plugin writing process.
 
 .. toctree::
    :maxdepth: 2