* Normalize several cloud-vendor SVGs (these are now stored in Figma as well)
* Add an OpenStack SVG
* Use these logos on the docs home, get-started home, and supported-clouds pages
* Add a hover effect to the logos, to indicate interactivity
* Adjust the border and hover colors on the get-started page, to match those on the home page
* Remove unused PNGs
* Remove an unused partial
Signed-off-by: Christian Nunciato <c@nunciato.org>
