feat: NCS-82 add Swiss-system tournament module (#55)

## Summary

  - Implements the full tournament lifecycle (create, join, withdraw, start,
    round progression, finish) as a standalone Quarkus module
  - All 11 endpoints from the OpenAPI spec (`docs/tournament-openapi.yaml`) are covered
  - Swiss pairing algorithm with Buchholz tiebreak and bye support
  - Per-bot NDJSON event stream with targeted `gameStart` events carrying
    the correct `color` field
  - Game results ingested via Redis writeback stream (`GameResultStreamListener`)

  ## Known gaps (deferred)

  - `GET /results` `nb` param defaults to 100 instead of all
  - `PairingDto` exposes an internal `id` field not in the spec
  - `GameExport.moves` emits PGN instead of UCI (upstream `GameWritebackEventDto`
    does not carry UCI moves)
  - `Pairing.white` can be `null` for bye rounds (spec has no bye concept)

  ## Test plan

  - [x] 23 `TournamentResourceTest` integration tests (H2, mocked core client) — all pass
  - [x] 5 `SwissPairingServiceTest` unit tests — all pass
  - [x] Redis listener excluded in test/dev profiles; no Docker required to run tests

---------

Co-authored-by: LQ63 <lkhermann@web.de>
Co-authored-by: Lala, Shahd <Shahd.Lala@sybit.de>
Reviewed-on: #55

modules/tournament/src/test/resources/application.yml

@@ -0,0 +1,32 @@
+quarkus:
+  http:
+    port: 8088
+  application:
+    name: nowchess-tournament
+  datasource:
+    db-kind: h2
+    username: sa
+    password: ""
+    jdbc:
+      url: "jdbc:h2:mem:nowchess-tournament;DB_CLOSE_DELAY=-1"
+  hibernate-orm:
+    schema-management:
+      strategy: drop-and-create
+  arc:
+    exclude-types: de.nowchess.tournament.redis.GameResultStreamListener
+mp:
+  jwt:
+    verify:
+      publickey:
+        location: keys/test-public.pem
+      issuer: nowchess
+smallrye:
+  jwt:
+    sign:
+      key:
+        location: keys/test-private.pem
+nowchess:
+  internal:
+    secret: test-secret
+    auth:
+      enabled: false