cookbook: Add recipe about handling button events
cookbook: Add recipe about handling button events

Recipe covers adding handlers for button-press-event and
button-release-event signals on actors, and how to
examine the content of a ClutterButtonEvent via API functions.

The discussion section explains about click count
(the criteria for how clicks get counted, including
distance and time settings); how button numbers are reported;
and how to use ClutterClickAction as an alternative
for press + release in certain scenarios.

kerrickstaley/clutter-vala,heysion/clutter-clone,Distrotech/clutter,ebassi/clutter,heysion/clutter-clone,djdeath/clutter,kerrickstaley/clutter-vala,Distrotech/clutter,dlespiau/clutter,heysion/clutter-clone,djdeath/clutter,ebassi/clutter,jigpu/clutter,djdeath/clutter-android,ebassi/clutter,collects/clutter,jigpu/clutter,djdeath/clutter,djdeath/clutter,djdeath/clutter-multithreaded,djdeath/clutter-android,dlespiau/clutter,djdeath/clutter-multithreaded,collects/clutter,spatulasnout/clutter,ebassi/clutter,GNOME/clutter,spatulasnout/clutter,spatulasnout/clutter,jigpu/clutter,GNOME/clutter,jigpu/clutter,GNOME/clutter,djdeath/clutter-android,dlespiau/clutter,spatulasnout/clutter,heysion/clutter-clone,Distrotech/clutter,jigpu/clutter,djdeath/clutter-multithreaded,heysion/clutter-clone,kerrickstaley/clutter-vala,spatulasnout/clutter,djdeath/clutter,ebassi/clutter,collects/clutter,nobled/clutter,djdeath/clutter-multithreaded,Distrotech/clutter,jigpu/clutter,GNOME/clutter,collects/clutter,djdeath/clutter-android,collects/clutter,Distrotech/clutter,GNOME/clutter,nobled/clutter,djdeath/clutter-android,Distrotech/clutter,nobled/clutter,djdeath/clutter,kerrickstaley/clutter-vala