Add optional asso pigliatutto rule with a lobby toggle

An ace played when no equal rank is on the table sweeps the whole
table; the sweep never scores a scopa, and an ace already on the table
still forces the mandatory equal-rank capture. The rule is off by
default, selectable per match via the schema-driven creation form, and
announced in the game view.

server/packages/tavolo-scopone/README.md

@@ -11,15 +11,17 @@ implementation.
   (de)serialization. No session envelope, no transport, no I/O.
 - `engine.py` — the pure rules engine: deck, legal captures, plays,
   auto-play, hand scoring (carte, denara, settebello, primiera, scope,
-  napola), hand-end acknowledgements. Deterministic and I/O-free apart
-  from logging, so the whole rule set is unit-testable.
+  napola), the optional asso pigliatutto sweep, hand-end
+  acknowledgements. Deterministic and I/O-free apart from logging, so the
+  whole rule set is unit-testable.
 - `errors.py` — scopone-specific errors (`CardNotInHand`); every other
   failure mode is a shared `tavolo.platform.errors` subclass.
 - `plugin.py` — `ScoponeEngine(GameEngine)`: the platform-facing adapter.
   It translates create/join/websocket actions/deadlines into rules-engine
-  calls and back, validates the `target_score`/`napola` creation options,
-  and extracts the `MatchResult` (teams, winner, per-player scores and the
-  match summary persisted as the match's JSON `result`).
+  calls and back, validates the `target_score`/`napola`/`asso_pigliatutto`
+  creation options, and extracts the `MatchResult` (teams, winner,
+  per-player scores and the match summary persisted as the match's JSON
+  `result`).
 
 Timeouts are constructor arguments (`turn_timeout_seconds`,
 `hand_ack_timeout_seconds`), wired from the environment by the