gitlab-ci: add a job that runs Fossilize on RADV/Polaris10

gitlab-ci: add a job that runs Fossilize on RADV/Polaris10

RADV_FORCE_FAMILY forces creating a null device that allows RADV
to be instanced without AMDGPU.

The Fossilize database only contains pipelines from the Sascha
Vulkan triangle demos at the moment. I will add more once this
is merged.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Michel Dänzer <mdaenzer@redhat.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3960>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3960>