dzn: Prepare things for dozen 1.1 support
Based on !15884 (merged) (dzn: Report actual device limits
depends on dzn: Make sure sampler heaps don't contain more than 2048 samplers
).
The first patch makes use of vk_get_physical_device_core_1_y_{feature,property}_ext()
so we can easily toggle the switch when new 1.1 features are added.
The second patch revisits the various limits that we were exposing to make them reflect the D3D12 static/dynamic limits.
Edited by Boris Brezillon