List all tournaments or create a new tournament.

GET /api/v1/tournaments/?ordering=first_pairing_method&page=5514
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Congrats on placing in a 13x13 2020 Simple Correspondence tournament! You have been invited to participate in a double elimination tournament for medal winners! Good luck!",
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