feat: remove serde in core #164

Job	Run time
Rust check	1m 7s
Test cargo	1m 19s
stable - x86_64-apple-darwin - node@18	5m 25s
stable - x86_64-pc-windows-msvc - node@18	6m 11s
stable - x86_64-unknown-linux-gnu - node@18	3m 38s
stable - aarch64-apple-darwin - node@18	2m 26s
stable - aarch64-pc-windows-msvc - node@18	8m 1s
Build universal macOS binary	16s
Test bindings on x86_64-pc-windows-msvc - node@14	38s
Test bindings on Linux-x64-gnu - node@14	26s
Test bindings on x86_64-pc-windows-msvc - node@16	37s
Test bindings on Linux-x64-gnu - node@16	25s
Test bindings on x86_64-pc-windows-msvc - node@18	28s
Test bindings on Linux-x64-gnu - node@18	17s
Publish	10s
	31m 24s

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