docs: rewrite "addons" docs to use node-gyp
docs: rewrite "addons" docs to use node-gyp

Closes #3100.
Closes #3101.

dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node