List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=players_start&page=86
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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        {
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            "description": "Happy New Year! This competition will be held for people from 1k-9d+. Let’s celebrate!",
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