feature suggestion, addition of a workflows to GitHub's interface

[nbehrnd]

When setting up a new action, GitHub offers a couple of workflows ready for use. By search with keyword pandoc, there however is no example yet which would either

• convert one light markup into an other, e.g. between orgmode/markdown and .tex
• convert e.g. markdown to yield a pptx presentation
• demonstrate the use of the second docker image to generate (via LaTeX as one pdf-engine) the conversion to yield a .pdf

I assume these example could booster the popularity of pandoc in general.