List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=max_ranking&page=703
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "ended": "2025-12-14T21:28:06.410546Z",
            "start_waiting": "2025-08-24T04:00:29.036836Z",
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}