feat: add mold for linux #1369

Job	Run time
Build x86_64-unknown-linux-musl	10m 28s
test (ubuntu-latest)	18m 30s
Build aarch64-unknown-linux-musl	11m 26s
test (macos-latest)	15m 18s
Build powerpc64le-unknown-linux-gnu	15m 44s
test (windows-latest)	9m 23s
Build x86_64-apple-darwin	19m 39s
Build aarch64-apple-darwin	14m 24s
Build x86_64-pc-windows-gnu	22m 12s
Build x86_64-pc-windows-msvc	22m 9s
Post-process	2s
	2h 39m 15s

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