install libdecor-

Author: MartinPulec

.github/scripts/Linux/prepare.sh

@@ -25,6 +25,7 @@ sudo apt install appstream `# appstreamcli for mkappimage AppStream validation`
         asciidoc
 sudo apt install fonts-dejavu-core
 sudo apt --no-install-recommends install nvidia-cuda-toolkit
+sudo apt install libdecor-0-0
 sudo apt install libglew-dev
 sudo apt install libglm-dev
 sudo apt install imagemagick libmagickwand-dev