build: rename project to match the repository name

While "wayland-info" is just one (and only) tool for now, use the more
general name "wayland-utils" for the meson project.

Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>

meson.build

-project('wayland-info',
+project('wayland-utils',
 	'c',
 	version: '1.0.0',
 	default_options: [