mesa-demos: split info tools to a separate package

mesa-demos: split info tools to a separate package

While the rest of programs inside mesa-demos are really "demos", several
*info utilities have separate value as they allow gathering information
about the running system in a manner similar to clinfo or vulkaninfo.
Split them into a separate package in order to allow picking them info
the images without picking up the rest of "demos".

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>