The platform now hosts multiple card games, with scopone scientifico as
the first one. Rename the brand wherever it is not a game rule:
- move the Python package to server/src/tavolo and update imports
- rename the Postgres database/user, OIDC issuer path, client id and
Redis key prefixes to tavolo (clean break: existing pgdata volumes and
live games are not migrated)
- rename the Cargo package to tavolo-web and set the page title to Tavolo
- update docs and the Docker image path to woggioni/tavolo
The scopa game term (clearing the table) in the engine, state and web UI
is intentionally left untouched.