Marp docs should be more accessible/easier to read

[nopeless]

Marp docs feel scattered and are hard to read/find what I want

An example doc format would look like this

Marp YAML

marp
paginate
backgroundImage
style

---

<!-- _class: my-class -->

![bg right]()

something more tangible and clickable like this would make more sense

[yhatt]

Currently you can peek the unified docs at https://marp.app/docs. (#126)

The ecosystem Marp itself and surrounding are constantly changing, and there is a plan to rebuild the website that is a bit gathering dust. So currently the unified docs is not yet preparing. We continue to welcome open feedback on the documentation.

[nopeless]

will there ever be a search function? additionally, there should be a single marp file with all the configuration and links provided next to them. like https://www.nginx.com/resources/wiki/start/topics/examples/full/