wined3d: Report WINED3D_FORMAT_CAP_BLIT for formats supporting VK_FORMAT_FEATURE_TRANSFER_SRC and VK_FORMAT_FEATURE_TRANSFER_DST.

Vulkan 1.0 implementations without KHR_maintenance1 will still be broken. In
order to work around this we would have to try creating textures with TRANSFER_*
usage. This does not seem worthwhile.