How to use `@intlify/core` in NodeJS

### Clear and concise description of the problem

Could you please add code samples and/or documentation how to use `@intlify/core` in bare NodeJS app.

### Suggested solution

Code samples or documentation or tests in the repo https://github.com/intlify/vue-i18n-next/tree/master/packages/core

### Alternative

_No response_

### Additional context

It would be helpful to use the same i18n system in `vue` app and server side code.

### Validations

- [X] Read the [Contributing Guidelines](https://github.com/intlify/vue-i18n-next/blob/master/.github/CONTRIBUTING.md)
- [X] Read the [Documentation](https://vue-i18n.intlify.dev/)
- [X] Check that there isn't already an issue that request the same feature to avoid creating a duplicate.