Binary package “libgtk3.0-cil-dev” in ubuntu focal

CLI binding for the GTK+ toolkit 3.0

 This package provides the gtk-sharp assembly that allows CLI (.NET) programs
 to use the GTK+ 3.0 user interface toolkit.
 .
 GTK# 3.0 is a CLI (.NET) language binding for the GTK+ 3.0 toolkit and related
 libraries.
 .
 This package contains development files for ATK#, Cairo#, GDK#, Glib#, GTK# and
 Pango#, and should be used for compilation.