List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=max_ranking&page=590
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Hi, thank you for joining this tournament . 大家好,感谢您的加入 \nPls join my group. If there are 10 members in my group, i will set up another tournament but with a prize \nHere us the link: https://online-go.com/group/9757",
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