Create markdown output template

Further progress is blocked by Hugo feature requests:

- https://discourse.gohugo.io/t/render-alternative-output-format-outside-of-leaf-bundle-subdirectory/46968
- https://github.com/gohugoio/hugo/issues/8927

exampleSite/hugo.yaml

@@ -15,6 +15,9 @@ taxonomies:
 markup: # this just keeps the bobatheme markup styling
   _merge: deep
 
+outputs:
+  _merge: deep
+
 params:
   author:
     name: bbaovanc