Add .npmignore file #85

Job	Run time
Build - x86_64-apple-darwin	1m 0s
Build - aarch64-apple-darwin	1m 14s
Build - x86_64-unknown-linux-gnu	51s
Build - aarch64-unknown-linux-gnu	1m 1s
Build - x86_64-unknown-linux-musl	1m 1s
Build - aarch64-unknown-linux-musl	1m 6s
Build - x86_64-pc-windows-msvc	15m 32s
Test node@20 - x86_64-apple-darwin	1m 5s
Test node@20 - aarch64-apple-darwin	49s
Test node@20 - x86_64-unknown-linux-gnu	44s
Test node@20 - aarch64-unknown-linux-gnu	2m 4s
Test node@20 - x86_64-unknown-linux-musl	58s
Test node@20 - aarch64-unknown-linux-musl	2m 3s
Test node@20 - x86_64-pc-windows-msvc	56s
Publish	0s
	30m 24s

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