This supersedes https://github.com/kata-containers/kata-containers/pull/12622.
I replaced Zensical with mkdocs-materialx. Materialx is a fork of mkdocs-material
created after mkdocs-material was put into maintenance mode. We'll use this
platform until Zensical is more feature complete.
Added a few of the existing docs into the site to make a more user-friendly flow.
Signed-off-by: LandonTClipp <11232769+LandonTClipp@users.noreply.github.com>
