Add libdecor
Summary
Add libdecor for better window decorations under Wayland. Downloading Blender and running it, it is after this lib for Wayland support and falls back to X11 if it can't find it.
https://code.blender.org/2022/10/wayland-support-on-linux/
Reasoning
The current wayland trend is to have client-side window decorations and non-GTK or Qt apps tend to not do this and have no window decorations as it is expecting a server-side one. Apps like Blender are using libdecor
as a way to draw a client-side window decoration under Wayland and most likely more apps will be doing this as well.