List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-time_start&page=3417
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "director": {
                "id": 895468,
                "username": "microgo",
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                "icon": "https://secure.gravatar.com/avatar/4134020f2f298c111575624a380fabfc?s=64&d=retro",
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            "is_open": true,
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                "name": "nctumicro",
                "summary": "",
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                "id": 750750,
                "username": "begingo1000",
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            "start_waiting": "2020-12-23T12:00:34.964479Z",
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            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 10,
            "ranked": true
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    ]
}