vkinstance: enable GPU assisted validation
This allows to check for syncronization issues while using the validation layer.
https://vulkan.lunarg.com/doc/sdk/1.3.239.0/linux/synchronization_usage.html
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This allows to check for syncronization issues while using the validation layer.
https://vulkan.lunarg.com/doc/sdk/1.3.239.0/linux/synchronization_usage.html