Thank you for reporting this! You're absolutely right — the server folder was accidentally missing from the v1.0.0 zip. I sincerely apologize for the inconvenience.
I've just released v1.0.1 which includes both the `plugin/` and `server/` folders. Please re-download and you should be all set.
After downloading, run the following in the `server/` directory to get started:
```
npm install
npm run build
```
Again, sorry about that, and thanks for letting me know!