codegen: GType classes require including "glib-object.h"
codegen: GType classes require including "glib-object.h"

Move the include at a better position to cover more cases.

frida/vala,GNOME/vala,GNOME/vala,frida/vala,frida/vala,GNOME/vala,frida/vala,GNOME/vala,frida/vala