List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-auto_start_on_max&page=505
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "summary": "A group for Go players who love the 9x9 board.",
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            "subsequent_pairing_method": "slaughter",
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            "analysis_enabled": true,
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            "ended": "2023-08-13T09:38:43.158925Z",
            "start_waiting": "2023-08-01T11:47:37.790192Z",
            "board_size": 9,
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}