List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=5299
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "ended": "2025-11-27T11:03:28.994166Z",
            "start_waiting": "2025-07-27T04:00:36.844001Z",
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}