feat: Add Support for video links, pdf viewing and ppt or slides.dev viewing

[aaronlippold]

Describe the feature

Given my documentation may have demos, videos showcasing capabilities or even presentations I have given it would be nice to have built in component and perhaps even some page layouts to support that.

Additional information

• Would you be willing to help implement this feature?

[Ast3risk-ops]

You can embed powerpoint presentations and PDFs via <iframe> elements (use google to figure out how).

Videos can be added like so:

<!-- You can add on other parameters after controls like autoplay, muted or loop.-->
<video width="320" height="240" controls>
  <!-- Video file can be local or remote (a URL) -->
  <source src="your-video-file.mp4" type="video/mp4">
</video>

Yes, you can use HTML inside Markdown files.