wayland-protocols: new Debian packaging

  Includes debian packaging for the first release of wayland-protocols.

  wayland-protocols contains protocols and protocol extensions
  complementing the Wayland core protocol with additional functionality. As
  of this release, projects can start to add a build time dependency on
  wayland-protocols and use wayland-scanner to generate protocol C API
  using the XML protocol files installed by wayland-protocols.

  This release include the following unstable protocols:

  . fullscreen-shell
  . input-method
  . linux-dmabuf
  . pointer-gestures
  . presentation-timing
  . text-input
  . xdg-shell

  No stable protocols were introduced in this release.

Signed-off-by: Héctor Orón Martínez <zumbi@debian.org>