feat: remove napi in core crate #156

Job	Run time
Rust check	1m 12s
Test cargo	1m 25s
stable - x86_64-apple-darwin - node@18	3m 50s
stable - x86_64-pc-windows-msvc - node@18	5m 27s
stable - x86_64-unknown-linux-gnu - node@18	2m 38s
stable - aarch64-apple-darwin - node@18	2m 9s
stable - aarch64-pc-windows-msvc - node@18	7m 30s
Build universal macOS binary	17s
Test bindings on x86_64-pc-windows-msvc - node@14	39s
Test bindings on Linux-x64-gnu - node@14	20s
Test bindings on x86_64-pc-windows-msvc - node@16	43s
Test bindings on Linux-x64-gnu - node@16	23s
Test bindings on x86_64-pc-windows-msvc - node@18	42s
Test bindings on Linux-x64-gnu - node@18	15s
Publish	10s
	27m 40s

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