Instead of declaring packages at the workplace-level package.json,
moving them into their relevant package-level package.json file.
`twenty-front`, `twenty-server` and `twenty-emails` continue to build
and work fine because of hoisting, but the dependencies now follow the
internal strategy of declaring at the package-level, plus give us a
single source of truth to updating package versions.
`twenty-front` and `twenty-emails` only use `@react-email/components`
while `twenty-server` only depends on `@react-email/render`.
Abdullah.
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