refactor: install clang tools on demand #568

Job	Run time
Build FreeBSD	4m 16s
Build i686-pc-windows-msvc	4m 36s
Build x86_64-pc-windows-msvc	5m 51s
Build x86_64-unknown-linux-musl	4m 0s
Build aarch64-unknown-linux-musl	3m 56s
Build x86_64-apple-darwin	3m 42s
Build x86_64-unknown-linux-gnu	3m 29s
Build armv7-unknown-linux-gnueabihf	3m 47s
Build aarch64-apple-darwin	3m 25s
Build aarch64-unknown-linux-gnu	3m 50s
Build aarch64-pc-windows-msvc	5m 4s
Test x86_64-unknown-linux-gnu - node@22	19s
Test aarch64-unknown-linux-musl - node@20	29s
Test x86_64-unknown-linux-musl - node@22	23s
Test armv7-unknown-linux-gnueabihf - node@20	52s
Test aarch64-apple-darwin - node@22	17s
Test x86_64-unknown-linux-musl - node@20	25s
Test armv7-unknown-linux-gnueabihf - node@22	42s
Test x86_64-unknown-linux-gnu - node@20	20s
Test aarch64-unknown-linux-gnu - node@20	29s
Test x86_64-pc-windows-msvc - node@22	51s
Test aarch64-pc-windows-msvc - node@22	49s
Test x86_64-pc-windows-msvc - node@20	1m 4s
Test x86_64-apple-darwin - node@20	57s
Test aarch64-unknown-linux-gnu - node@22	32s
Test aarch64-pc-windows-msvc - node@20	49s
Test aarch64-unknown-linux-musl - node@22	28s
Test aarch64-apple-darwin - node@20	23s
Test x86_64-apple-darwin - node@22	49s
Publish	18s
	57m 12s

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