Added raise to the shell surface interface in wayland client protocol

Added raise to the shell surface interface in wayland client protocol

Extending the shell surface interface by defining a raise request which
clients can send to raise a shell surface to the top of the window stack,
this is added as a work-around for app-core resume app functionality to
work properly in wayland, so it behaves the same as raising a window in
X using _NET_ACTIVE_WINDOW property.

Signed-off-by: Jimmy Huang <jimmy.huang@intel.com>