List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=subsequent_pairing_method&page=667
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "description": "Pokémon Go 12/25/2021 Christmas! This is a 19x19 tournament I hope you have a wonderful Christmas 🎅! By Alena",
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