List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=subsequent_pairing_method&page=109
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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                "name": "Happy Go!!!",
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            "started": "2023-07-05T04:00:57.903211Z",
            "ended": "2023-10-02T23:45:27.859511Z",
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}