List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-first_pairing_method&page=578
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2020-06-22T18:34:53.393201Z",
            "ended": "2020-09-06T21:59:00.004920Z",
            "start_waiting": "2020-06-22T18:34:52.126703Z",
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}