Fix nx lint setup

[charlesBochet]

In this PR, I'm improving nx dev experience and fixing a few bugs.

1. Removing packages from the root package.json, they should always be in their own package
2. Introducing a nx command in each package.json to run yarn command through nx easily: yarn nx lint / yarn nx database:reset ...
3. Simplifying linter config: There is one .eslintrc.js at the root, and each package is free to extend it or to start from fresh one.

[github-actions]

TODOs/FIXMEs:

• // TODO if we ever hit API Rate Limiting: packages/twenty-website/src/app/developers/contributors/api/generate/route.tsx
• // TODO if we ever hit API Rate Limiting: packages/twenty-website/src/app/developers/contributors/api/generate/route.tsx

Generated by 🚫 dangerJS against d2cfdb7