d3d12/ci: Add vainfo with appverifier CI check

This trivially covers VA initialization/destruction path
is working with the d3d12 gallium driver, and also check
for leaks using appverifier.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28577>

.gitlab-ci/windows/Dockerfile_test

@@ -14,6 +14,9 @@ RUN C:\mesa_deps_rust.ps1
 
 COPY mesa_init_msvc.ps1 C:\
 
+COPY mesa_deps_libva.ps1 C:\
+RUN C:\mesa_deps_libva.ps1
+
 COPY mesa_deps_test_piglit.ps1 C:\
 RUN C:\mesa_deps_test_piglit.ps1
 COPY mesa_deps_test_deqp.ps1 c:\