Draft: feat: Add click-to-play gif previews
gtk4paintablesink requires gstreamer-plugins-rs. This package is available on Fedora and Tumbleweed and as far as I understood it is also part of the Flatpak SDK.
I have not checked the availability on other distributions, however if the pipeline cannot be constructed for any reason, the preview will fallback to show only the static thumbnail with an additional overlay saying "GIF". On click it will open the original file in the default image viewer as usual.
Fixes #10708
Edited by mesonium