List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=id&page=3902
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "id": 90846,
            "name": "1 -> 王善緯 2 -> 郭在田",
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                "id": 818416,
                "username": "傳碁學園",
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            "description": "1 -> 王善緯\n2 -> 郭在田",
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        {
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            "id": 90856,
            "name": "The 46th Murase Go Group Tournament",
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        {
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