Handle / resolve workspaces that reference one another

[voxpelli]

Eg. knip references a shared eslint-config from its packages: https://github.com/webpro/knip/blob/a69b2b859f28cb4e97254c7147f2799308f7e6cc/packages/knip/package.json#L90

And eg pnpm itself also does

[voxpelli]

Kind of done with [email protected] as it now follows symlinks.

Still doesn't take interdependency in consideration when suggesting engine ranges though, so if X relies on Y and Y has a tighter suggested engine range than X, then X will not get that engine range suggested until the engine range of Y has been fixed.

This is especially a blocker for voxpelli/node-installed-check#89