Implement slideshow template

[jorgepiloto]

💡 Implement slideshow template
It would be very interesting to have a template for creating slideshows. Main users of this target would be developers who want to:

• Focus on slide content rather in final style, that is using a Markup language.
• Avoid Power Point interaction while still being able to export to this format.
• HTML and PDF export support.
• Have support for LaTeX math, image customization and code snippets.

📝 Implementation
From personal experience during SciPyConf 2022, Marp turned out to be an excellent tool covering all previous requirements.

We could implement our own Ansys theme for this theme, emulating the current one for Power Point presentations.

[jorgepiloto]

Notice that another slideshow option could be Beamer.

I am not opposed to implement Beamer based template, but compared to Marp, it is a big effort.