Include Smart Citizen Kit 2.2

[oscgonfer]

In the refurbish branch we have changed a bit how the hardware is shown. However, we do not have a clean way to show the items that have different versions (i.e. data/urban board 1.5, 2.0, 2.1, 2.2...) and an easy way for the reader to see what version / feature go with eachother.

Maybe using something like: https://squidfunk.github.io/mkdocs-material/reference/content-tabs/ would help, but we have to find a nice / clean way to integrate it in our docs.