List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=players_start&page=5607
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Good luck and have fun!\nJust give you a heads up, and suspicious activities might get you kicked out of this tournament (such as AI use).",
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                "name": "The Ranked Group",
                "summary": "Join this group and compete for the best ^^",
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                "summary": "This group exists as a place to enjoy weekly tournaments with competitively minded players using the lesser known but arguably strategically superior New Zealand rule set. All are welcome here ヽ(≧◡≦)ノ",
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                "summary": "A group where events are held at 10 rank intervals (e.g. 30-21 kyu; 20-11 kyu).",
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        {
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