List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=first_pairing_method&page=5843
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "ended": "2024-08-01T10:01:59.490956Z",
            "start_waiting": "2023-11-27T09:00:54.119826Z",
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}