Automatically limiting push constants to those shader stages that are… #486

Job	Run time
linux: gcc, VulkanSDK latest, VMA=ON	1m 23s
windows: msvc, windows-2019, VulkanSDK latest, VMA=ON	1m 19s
linux: gcc, VulkanSDK 1.2.198, VMA=OFF	1m 30s
linux: gcc, VulkanSDK latest, VMA=OFF	1m 18s
windows: msvc, windows-2019, VulkanSDK latest, VMA=OFF	1m 20s
windows: msvc, windows-latest, VulkanSDK latest, VMA=ON	1m 35s
linux: gcc, VulkanSDK 1.3.243, VMA=ON	1m 21s
windows: msvc, windows-2019, VulkanSDK 1.3.243.0, VMA=ON	2m 0s
windows: msvc, windows-latest, VulkanSDK latest, VMA=OFF	53s
linux: gcc, VulkanSDK 1.3.243, VMA=OFF	1m 14s
windows: msvc, windows-2019, VulkanSDK 1.3.243.0, VMA=OFF	1m 25s
windows: msvc, windows-latest, VulkanSDK 1.3.243.0, VMA=ON	1m 16s
windows: msvc, windows-2019, VulkanSDK 1.2.198.1, VMA=OFF	1m 8s
windows: msvc, windows-latest, VulkanSDK 1.3.243.0, VMA=OFF	1m 23s
windows: msvc, windows-latest, VulkanSDK 1.2.198.1, VMA=OFF	49s
	19m 54s

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