feat: Download WASI-SDK during build (#188) #174

Job	Run time
Populate cache	11m 25s
Build Python sdist	45s
Build and release (windows-latest, amd64, x64, WebAssembly, x86_64-windows, .exe, target/release)	27m 43s
Build and release (ubuntu-latest, amd64, x86_64, dicej, x86_64-linux, target/release)	16m 42s
Build and release (macos-latest, aarch64, aarch64, WebAssembly, arm64-macos, --target aarch64-app...	16m 30s
Build and release (macos-latest, amd64, x86_64, WebAssembly, arm64-macos, target/release)	18m 27s
Build and release (ubuntu-latest, aarch64, aarch64, WebAssembly, x86_64-linux, --target aarch64-u...	18m 39s
Generate checksums	10s
Update canary release	35s
	1h 50m 56s

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