Guido Günther authored Dec 30, 2024 and Marge Bot committed Jan 03, 2025

Screenshots are used a lot on mobile so make sure we generate thumbnails
for the cases where the e.g. uploading application doesn't.

We already have all the data so write out a thumbnail per
https://specifications.freedesktop.org/thumbnail-spec/0.8.0/



Signed-off-by: Guido Günther <agx@sigxcpu.org>
Part-of: <!1598>