List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=max_ranking&page=5228
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "name": "5th FGTC Casual Open Tournament ♥",
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            "description": "Tournaments are held every Saturday\n\nJoin the OST community (^-^)",
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                "name": "GO Special Tournaments",
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