template: move `enable_debug_layer` to new mod util #41

Job	Run time
xtask test & lint	2m 13s
lint (spirv-builder)	5m 31s
lint (cargo-gpu)	6m 52s
test (ubuntu-24.04, cargo-gpu)	7m 29s
test (ubuntu-24.04, spirv-builder)	5m 52s
test (windows-2022, spirv-builder)	8m 9s
test (macOS-latest, cargo-gpu)	7m 12s
test (windows-2022, cargo-gpu)	12m 0s
test (macOS-latest, spirv-builder)	8m 34s
test_success	3s
	1h 3m 55s

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