List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=5845
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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        {
            "id": 2908,
            "name": "SWT 9x9 30-17kyu 2nd Cycle",
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}