Zero-config `yarn etwin start`
When installing the
@eternal-twin/website package inside another project, you need to manually create an
etwin.toml configuration file before starting the website. This adds friction to the installation process.
We should provide a zero-config installation: when running without a config file, the CLI should use a default
etwin.toml and warn the user that the config is missing. Most users would still need a configuration file, but it should at least improve the first start experience.