node-api: C embedding function "node_rt_main" #1078

Job	Run time
Build slim tarball	1m 30s
x86_64-linux: with shared libraries	35m 14s
aarch64-darwin: with shared libraries	30m 37s
x86_64-darwin: with shared libraries	1h 2m 59s
aarch64-linux: with shared libraries	29m 32s
	2h 39m 52s

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