List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-max_ranking&page=666
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Feel free to join the tournament to remember 228.\n\nhttps://youtu.be/UxSq7tDEAYw\n\nhttps://en.wikipedia.org/wiki/February_28_incident",
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