List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=player_count&page=5712
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "name": "New year January Tournament",
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            "description": "Welcome to the new year!!!",
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                "name": "Virtuoso Go Association 🕶",
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            "description": "毎月27日に開催される定例トーナメントです。これは第四十五回村瀬碁グループ定例トーナメントです。2022年6月27日に開始されます。\n\nA tournament that happens every month on the 27th. This is the 45th tournament that starts on June 27th, 2022.",
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            "description": "It's Early Spring, and few tournaments hit the 15-5 kyu sweet spot... so here we go! :)",
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                "name": "Kyu Level Study Group",
                "summary": "A group for kyu level players! Join, play tournaments, and have fun. Thanks for being a part of our community!",
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