Add component thumbnails in addition to description

[ddahan]

Currently, components are described with a title and a description.
It would be great to have some thumbnails to be more explicit about the utility, like the Daisy UI screenshot below.

However:

• Using existing ones like daisy UI don't solve the case where the component is actually not in Daisy UI.
• I'm not sure I would be allowed to reuse this images.

This implies that work should be done from scratch, and could be very time consuming.