This commit replaces the Zephyr logo for the HTML documentations with
the new registered trademark version.
Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
A new look and feel for the Zephyr documentation. It is largerly based
on the work done by Godot Engine docs, but with some Zephyr specific
customizations.
Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>