feat: switch from eslint-plugin-node to eslint-plugin-n

[aldeed]

Problem

eslint-plugin-node has been abandoned for some time with no recommended replacement.

Solution

eslint-plugin-n is a fork that currently seems to be maintained pretty well. This updates our dependencies and config to use eslint-plugin-n.

Breaking Changes

Although it's basically a drop-in replacement, this will cause some breaking changes so it should be in a major release.

• All config and eslint-disable comments will need to be updated from node/ to n/
• In my testing, this resulted in many new (true) errors because eslint-plugin-n has been maintained and received fixes while eslint-plugin-node has not. So updating will require fixing or ignoring these new errors.