List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=name&page=2338
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "time_start": "2022-01-28T13:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
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            "started": "2022-01-28T12:29:56.048427Z",
            "ended": "2022-03-05T09:36:41.811197Z",
            "start_waiting": "2022-01-28T12:29:55.694510Z",
            "board_size": 13,
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}