Switch from push constants to storage buffers #54

Job	Run time
xtask test & lint	7m 23s
lint (spirv-builder)	6m 20s
lint (cargo-gpu)	7m 27s
test (macOS-latest, spirv-builder)	5m 53s
test (windows-2022, cargo-gpu)	14m 36s
test (ubuntu-24.04, spirv-builder)	6m 53s
test (macOS-latest, cargo-gpu)	10m 27s
test (windows-2022, spirv-builder)	9m 44s
test (ubuntu-24.04, cargo-gpu)	8m 39s
test_success	3s
	1h 17m 25s

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