add `spirv-unknown-naga-wgsl` target via naga #513

Job	Run time
Android (ubuntu-24.04, aarch64-linux-android)	8m 33s
Test (windows-2022)	16m 2s
Test (macOS-latest)	6m 58s
cargo-deny	1m 24s
Difftest (ubuntu-24.04)	9m 39s
Lint	5m 59s
Test (ubuntu-24.04)	9m 20s
Difftest (windows-2022)	18m 18s
Difftest (macOS-latest)	7m 6s
Compiletest (ubuntu-24.04, vulkan1.1, false)	4m 36s
Compiletest (ubuntu-24.04, vulkan1.2, false)	4m 37s
Compiletest (ubuntu-24.04, vulkan1.3, false)	4m 36s
Compiletest (windows-2022, vulkan1.2, false)	9m 31s
Compiletest (ubuntu-24.04, vulkan1.4, false)	4m 40s
Compiletest (windows-2022, vulkan1.4, false)	9m 56s
Compiletest (windows-2022, vulkan1.3, false)	8m 47s
Compiletest (macOS-latest, vulkan1.2, false)	4m 23s
Compiletest (macOS-latest, vulkan1.1, false)	3m 50s
Compiletest (macOS-latest, vulkan1.3, false)	5m 42s
Compiletest (windows-2022, vulkan1.1, false)	8m 29s
Compiletest (ubuntu-24.04, wgsl, true)	4m 27s
Compiletest (macOS-latest, vulkan1.4, false)	5m 11s
test_success	3s
	2h 42m 7s

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