Fix import twenty-shared

[charlesBochet]

In this PR:

• removing rootDir / baseUrl from any tsconfig.json
• we need to keep it in tsconfig.spec.json and also specify rootDir in jest.config.ts moduleMapper because of the way nx jest executor works (automatically moving back to root)
• we need to explictly specify the depencies to twenty-shared / twenty-emails (built packages) in packages package.json to help nx understand dependencies

[charlesBochet]

if we want to fix this, we will need to get rid of this nx nx/jest:jest runner

[prastoin]

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