build: Add missing files to the API reference build
build: Add missing files to the API reference build

Distrotech/clutter,GNOME/clutter,jigpu/clutter,jigpu/clutter,Distrotech/clutter,jigpu/clutter,jigpu/clutter,jigpu/clutter,Distrotech/clutter,Distrotech/clutter,GNOME/clutter,Distrotech/clutter,GNOME/clutter,GNOME/clutter,Distrotech/clutter,GNOME/clutter,jigpu/clutter