List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=analysis_enabled&page=5757
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "name": "Happy Go!!!",
                "summary": "Feel free to join and create tournaments!\nCreate tournaments = admin\n\nDouble Elimination tournaments every Sunday    \nSingle Elimination tournaments every Thursday\n\nHAPPY",
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            "started": "2025-02-23T04:00:50.401497Z",
            "ended": "2025-09-27T04:55:10.164212Z",
            "start_waiting": "2025-02-23T04:00:50.300650Z",
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}