winevulkan: Enable VK_EXT_hdr_metadata
This works fine with the new struct conversions, and is needed for HDR with native Vulkan games such as Doom Eternal and games using HDR with DXVK and VKD3D-Proton.
This works fine with the new struct conversions, and is needed for HDR with native Vulkan games such as Doom Eternal and games using HDR with DXVK and VKD3D-Proton.