build: halt meson configuration if no renderer API
build: halt meson configuration if no renderer API

We should halt meson configuration if there is no render API
installed (either DRM, Wayland or X11).

That behavior was already in autotools but missed in meson. This patch
brings it back.

Fixes: #196

ceyusa/gstreamer-vaapi,GStreamer/gstreamer-vaapi,ceyusa/gstreamer-vaapi,GStreamer/gstreamer-vaapi