node-api: add support for Float16Array #458

Job	Run time
Build slim tarball	1m 31s
aarch64-linux: with shared libraries	26m 46s
x86_64-darwin: with shared libraries	57m 38s
aarch64-darwin: with shared libraries	31m 41s
x86_64-linux: with shared libraries	32m 38s
	2h 30m 14s

Provide feedback