[Marketing] cURL stickers for FOSS4G

All - I have been networking with the cURL project for the last few months. The cURL project is popular in the public, says "networks" to everyone (an important topic in 2023), and has gotten awards from EU OSS government organizations recently.

Laptop stickers are popular. Maybe it is worth the effort to include cURL stickers for FOSS4G, along with the USB "card" for OSGeoLive.