List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=max_ranking&page=493
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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    "next": "https://online-go.com/api/v1/tournaments?format=api&ordering=max_ranking&page=494",
    "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=max_ranking&page=492",
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            "description": "WELCOME EVERYONE❤️😊😊",
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                "summary": "欢迎围棋爱好者来到属于您的园地\n\n\n          In Your 💖 Go to Universes everywhere",
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            "description": "Please enter",
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