DX12 CTS Results Tracking

[grovesNL]

This is just a place where we can put results as we work through different test sets in the CTS. I think we can probably ignore some of the bad results for "info" in this run because they seem to come from some misbehaving layers.

Here's a full CTS run on DX12 using commit 7c42b54:

The biggest source of crashes at the moment are the groups "pipeline" (especially "stencil", "image", "image_view") and "binding_model" ("shader_access"/"primary_cmd_buf" and "secondary_cmd_buf"), so they might be interesting groups to target next.