Switch from push constants to storage buffers #58

Job	Run time
lint (spirv-builder)	5m 32s
lint (cargo-gpu)	5m 30s
xtask test & lint	5m 30s
test (macOS-latest, cargo-gpu)	5m 32s
test (windows-2022, spirv-builder)	3m 36s
test (ubuntu-24.04, cargo-gpu)	5m 32s
test (ubuntu-24.04, spirv-builder)	1m 37s
test (macOS-latest, spirv-builder)	1m 57s
test (windows-2022, cargo-gpu)	5m 27s
test_success	2s
	40m 15s

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