List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=1428
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Giải tổ chức hàng quý, dành cho tất cả người chơi cờ vây Việt nam, yêu cầu rank chuẩn trước khi tham gia để xếp bảng thi đấu vừa sức. \nKhuyến khích các kỳ thủ hẹn thời gian thi đấu qua discord hoặc FB. Giới hạn thời gian hoàn thành mỗi vòng là 2 tuần (absolute 7 ngày mỗi bên). \nLink discord: \nGroup facebook:",
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            "description": "Here is the new 19x19 tornament, the first one for this group, good luck!",
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            "name": "BTS League A5",
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            "description": "Dan tttt",
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            "description": "Everyone is welcome.\nIt is capped at 16 players. An identical tournament that starts after one month or at 16 players will be created as soon as this tournament starts.",
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