docs: Add missing symbols to the API reference
docs: Add missing symbols to the API reference

djdeath/clutter,Distrotech/clutter,jigpu/clutter,jigpu/clutter,GNOME/clutter,Distrotech/clutter,jigpu/clutter,djdeath/clutter,jigpu/clutter,GNOME/clutter,ebassi/clutter,jigpu/clutter,ebassi/clutter,ebassi/clutter,Distrotech/clutter,djdeath/clutter,Distrotech/clutter,GNOME/clutter,djdeath/clutter,GNOME/clutter,GNOME/clutter,ebassi/clutter,djdeath/clutter,Distrotech/clutter,ebassi/clutter,jigpu/clutter,djdeath/clutter,Distrotech/clutter