Add nextjs package

[neilime]

Is your feature request related to a problem? Please describe.

Nextjs have it's own file strucuture, and dev deps, it aims to have a dedicated package

Describe the solution you'd like

Manage pages and lib directories for tests and lint config

https://nextjs.org/docs/basic-features/eslint#migrating-existing-config

[github-actions]

This issue is stale