List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-time_per_move&page=194
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "started": "2023-02-13T09:00:58.506520Z",
            "ended": "2023-06-25T13:34:18.544505Z",
            "start_waiting": "2023-02-13T09:00:58.284804Z",
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}