List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=max_ranking&page=533
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "name": "Cracks Mexicanitos",
                "summary": "En este grupo BTS.chimy tratara de que este sea un grupo muy bueno, haciendo torneos cada 2 semanas esperamos se diviertan =P.",
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            "subsequent_pairing_method": "slide",
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            "exclusivity": "open",
            "started": "2020-09-27T17:00:28.787964Z",
            "ended": "2020-09-27T17:59:59.710152Z",
            "start_waiting": "2020-09-27T17:00:28.558560Z",
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            "player_count": 5,
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}