Rename the app from scopa to tavolo

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.

server/pyproject.toml

@@ -3,9 +3,9 @@ requires = ["setuptools>=68"]
 build-backend = "setuptools.build_meta"
 
 [project]
-name = "scopa"
+name = "tavolo"
 version = "0.1.0"
-description = "Scopone scientifico multiplayer backend built on the kaya framework"
+description = "Multiplayer card-game platform backend built on the kaya framework"
 readme = "README.md"
 requires-python = ">=3.10"
 dependencies = [
@@ -37,7 +37,7 @@ namespaces = false
 
 # Database migrations (aerich). See the Migrations section in README.md.
 [tool.aerich]
-tortoise_orm = "scopa.aerich_config.TORTOISE_ORM"
+tortoise_orm = "tavolo.aerich_config.TORTOISE_ORM"
 location = "./migrations"
 
 [tool.mypy]
@@ -49,13 +49,13 @@ plugins = []
 # runtime; without the (unavailable here) tortoise mypy plugin the stubs
 # only declare the relation field. These are real attributes, not bugs.
 [[tool.mypy.overrides]]
-module = "scopa.models"
+module = "tavolo.models"
 disable_error_code = ["attr-defined"]
 
 [[tool.mypy.overrides]]
-module = "scopa.routes.*"
+module = "tavolo.routes.*"
 disable_error_code = ["attr-defined"]
 
 [[tool.mypy.overrides]]
-module = "scopa.game.*"
+module = "tavolo.game.*"
 disable_error_code = ["attr-defined"]