node-api: add support for Float16Array #995

Job	Run time
Build slim tarball	1m 33s
x86_64-linux: with shared libraries	35m 57s
aarch64-darwin: with shared libraries	35m 24s
aarch64-linux: with shared libraries	31m 26s
x86_64-darwin: with shared libraries	1h 10m 14s
	2h 54m 34s

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