"Sponsors" and "Partners" info

[andybak]

Sponsors will be about financial contributors. Some logos at the top and then a long list of individuals (maybe from the Open Collective API?)

Partners (better term for this?) will be more about integrations - so links to the Hubs, Godot importer etc.

(We need to have a think about the broader topic of how Icosa-specific stuff like this co-exists with the fact the main website is a reusable piece of software)

[mikeskydev]

"partners" could take some inspiration from https://sketchfab.com/exporters (there's /importers) too